/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:22:13,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:22:13,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:22:13,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:22:13,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:22:13,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:22:13,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:22:13,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:22:13,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:22:13,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:22:13,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:22:13,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:22:13,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:22:13,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:22:13,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:22:13,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:22:13,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:22:13,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:22:13,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:22:13,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:22:13,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 19:22:13,259 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:22:13,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:22:13,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:22:13,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:22:13,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:22:13,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:22:13,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:22:13,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:22:13,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:22:13,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:22:13,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:22:13,263 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:22:13,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:22:13,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:22:13,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:22:13,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:22:13,433 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:22:13,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum3.i [2022-01-31 19:22:13,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6510b5e/af91e9c12c7e488b95fcdb42e89aa348/FLAG5d92d9321 [2022-01-31 19:22:13,820 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:22:13,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum3.i [2022-01-31 19:22:13,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6510b5e/af91e9c12c7e488b95fcdb42e89aa348/FLAG5d92d9321 [2022-01-31 19:22:13,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6510b5e/af91e9c12c7e488b95fcdb42e89aa348 [2022-01-31 19:22:13,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:22:13,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:22:13,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:22:13,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:22:13,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:22:13,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:22:13" (1/1) ... [2022-01-31 19:22:13,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a929b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:13, skipping insertion in model container [2022-01-31 19:22:13,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:22:13" (1/1) ... [2022-01-31 19:22:13,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:22:13,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:22:13,984 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum3.i[1312,1325] [2022-01-31 19:22:13,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:22:13,990 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:22:14,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum3.i[1312,1325] [2022-01-31 19:22:14,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:22:14,011 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:22:14,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14 WrapperNode [2022-01-31 19:22:14,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:22:14,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:22:14,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:22:14,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:22:14,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:22:14,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:22:14,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:22:14,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:22:14,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (1/1) ... [2022-01-31 19:22:14,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:22:14,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:22:14,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 19:22:14,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 19:22:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:22:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:22:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:22:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-01-31 19:22:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:22:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:22:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:22:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 19:22:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 19:22:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:22:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:22:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:22:14,146 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:22:14,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:22:14,241 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:22:14,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:22:14,245 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 19:22:14,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:22:14 BoogieIcfgContainer [2022-01-31 19:22:14,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:22:14,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:22:14,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:22:14,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:22:14,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:22:13" (1/3) ... [2022-01-31 19:22:14,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792818de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:22:14, skipping insertion in model container [2022-01-31 19:22:14,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:22:14" (2/3) ... [2022-01-31 19:22:14,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792818de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:22:14, skipping insertion in model container [2022-01-31 19:22:14,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:22:14" (3/3) ... [2022-01-31 19:22:14,256 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2022-01-31 19:22:14,259 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:22:14,259 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:22:14,287 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:22:14,293 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 19:22:14,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:22:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:22:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 19:22:14,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:14,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:14,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1514933818, now seen corresponding path program 1 times [2022-01-31 19:22:14,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103553538] [2022-01-31 19:22:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:14,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:14,361 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 19:22:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 19:22:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 19:22:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 19:22:14,514 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:14,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103553538] [2022-01-31 19:22:14,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1103553538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:14,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:22:14,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408718593] [2022-01-31 19:22:14,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:14,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:22:14,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:22:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:22:14,544 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:14,610 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-01-31 19:22:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:22:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 19:22:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:14,620 INFO L225 Difference]: With dead ends: 54 [2022-01-31 19:22:14,620 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 19:22:14,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:22:14,632 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:14,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 19:22:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 19:22:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-31 19:22:14,661 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2022-01-31 19:22:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:14,661 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-31 19:22:14,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-31 19:22:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 19:22:14,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:14,663 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:14,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:22:14,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -649748416, now seen corresponding path program 1 times [2022-01-31 19:22:14,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126747625] [2022-01-31 19:22:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:14,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:14,675 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 19:22:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 19:22:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 19:22:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 19:22:14,772 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:14,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126747625] [2022-01-31 19:22:14,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [126747625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:14,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:14,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:22:14,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061944847] [2022-01-31 19:22:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:14,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:22:14,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:22:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:22:14,774 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:14,865 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2022-01-31 19:22:14,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:22:14,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 19:22:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:14,866 INFO L225 Difference]: With dead ends: 48 [2022-01-31 19:22:14,866 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 19:22:14,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:22:14,867 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:14,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 19:22:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-31 19:22:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 19:22:14,874 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2022-01-31 19:22:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:14,874 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 19:22:14,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 19:22:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 19:22:14,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:14,875 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:14,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:22:14,875 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1359785280, now seen corresponding path program 1 times [2022-01-31 19:22:14,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:14,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922475822] [2022-01-31 19:22:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:14,892 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:14,892 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:14,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:14,894 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 19:22:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 19:22:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 19:22:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-31 19:22:14,985 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:14,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922475822] [2022-01-31 19:22:14,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1922475822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:14,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:14,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:22:14,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493489816] [2022-01-31 19:22:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:14,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:22:14,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:22:14,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:22:14,987 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:15,087 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-01-31 19:22:15,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:22:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-01-31 19:22:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:15,088 INFO L225 Difference]: With dead ends: 50 [2022-01-31 19:22:15,088 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 19:22:15,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:22:15,090 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:15,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 19:22:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-31 19:22:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 19:22:15,095 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 40 [2022-01-31 19:22:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:15,095 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 19:22:15,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 19:22:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 19:22:15,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:15,096 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:15,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:22:15,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 582810658, now seen corresponding path program 2 times [2022-01-31 19:22:15,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:15,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152400928] [2022-01-31 19:22:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:15,100 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:15,100 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:15,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:15,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:22:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 19:22:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 19:22:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 19:22:15,204 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:15,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152400928] [2022-01-31 19:22:15,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [152400928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:15,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:15,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:22:15,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966570664] [2022-01-31 19:22:15,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:15,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:22:15,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:22:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:22:15,205 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:15,267 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-01-31 19:22:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:22:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-01-31 19:22:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:15,269 INFO L225 Difference]: With dead ends: 51 [2022-01-31 19:22:15,269 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 19:22:15,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:22:15,271 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:15,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 19:22:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-31 19:22:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-31 19:22:15,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 42 [2022-01-31 19:22:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:15,276 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-31 19:22:15,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-31 19:22:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 19:22:15,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:15,277 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:15,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:22:15,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1957141696, now seen corresponding path program 3 times [2022-01-31 19:22:15,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:15,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355268993] [2022-01-31 19:22:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:15,280 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:15,280 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:15,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:15,281 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:22:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:22:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:22:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:15,379 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:15,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355268993] [2022-01-31 19:22:15,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [355268993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:15,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:15,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 19:22:15,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779948853] [2022-01-31 19:22:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:15,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 19:22:15,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 19:22:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 19:22:15,381 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:15,431 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-01-31 19:22:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 19:22:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-01-31 19:22:15,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:15,434 INFO L225 Difference]: With dead ends: 49 [2022-01-31 19:22:15,434 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 19:22:15,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:22:15,442 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:15,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 19:22:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-01-31 19:22:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 19:22:15,450 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2022-01-31 19:22:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:15,450 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 19:22:15,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 19:22:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 19:22:15,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:15,452 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:15,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 19:22:15,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -173524546, now seen corresponding path program 1 times [2022-01-31 19:22:15,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:15,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404660434] [2022-01-31 19:22:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:15,455 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:15,455 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:15,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:15,460 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:22:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:22:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 19:22:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:15,560 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:15,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404660434] [2022-01-31 19:22:15,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1404660434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:15,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:15,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:22:15,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524305948] [2022-01-31 19:22:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:15,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:22:15,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:15,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:22:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:22:15,562 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:15,623 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-01-31 19:22:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:22:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-01-31 19:22:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:15,626 INFO L225 Difference]: With dead ends: 51 [2022-01-31 19:22:15,627 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 19:22:15,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:22:15,630 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:15,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 19:22:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-01-31 19:22:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-31 19:22:15,648 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2022-01-31 19:22:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:15,648 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-31 19:22:15,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-31 19:22:15,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-31 19:22:15,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:15,652 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:15,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 19:22:15,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:15,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash 190605500, now seen corresponding path program 2 times [2022-01-31 19:22:15,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:15,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118791384] [2022-01-31 19:22:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:15,655 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:15,655 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:15,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:15,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 19:22:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:22:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 19:22:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:15,758 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:15,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118791384] [2022-01-31 19:22:15,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1118791384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:15,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:15,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:22:15,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243704759] [2022-01-31 19:22:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:15,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:22:15,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:22:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:22:15,760 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:15,817 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2022-01-31 19:22:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 19:22:15,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-01-31 19:22:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:15,818 INFO L225 Difference]: With dead ends: 62 [2022-01-31 19:22:15,818 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 19:22:15,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:22:15,821 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:15,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 19:22:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-31 19:22:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-01-31 19:22:15,830 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2022-01-31 19:22:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:15,831 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-01-31 19:22:15,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-01-31 19:22:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 19:22:15,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:15,832 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:15,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 19:22:15,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:15,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:15,833 INFO L85 PathProgramCache]: Analyzing trace with hash -417788130, now seen corresponding path program 3 times [2022-01-31 19:22:15,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:15,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787273771] [2022-01-31 19:22:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:15,836 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:15,836 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:15,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:15,838 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 19:22:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 19:22:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 19:22:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:15,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:15,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787273771] [2022-01-31 19:22:15,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [787273771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:15,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:15,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 19:22:15,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088705339] [2022-01-31 19:22:15,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:15,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 19:22:15,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:15,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 19:22:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:22:15,957 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:16,034 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-01-31 19:22:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 19:22:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-01-31 19:22:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:16,036 INFO L225 Difference]: With dead ends: 64 [2022-01-31 19:22:16,036 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 19:22:16,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 19:22:16,039 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:16,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 19:22:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 19:22:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-01-31 19:22:16,055 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2022-01-31 19:22:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:16,055 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-01-31 19:22:16,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-01-31 19:22:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 19:22:16,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:16,056 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:16,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 19:22:16,057 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash -968514304, now seen corresponding path program 4 times [2022-01-31 19:22:16,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:16,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084802624] [2022-01-31 19:22:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:16,059 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:16,059 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:16,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:16,060 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 19:22:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 19:22:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:22:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:16,144 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:16,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084802624] [2022-01-31 19:22:16,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2084802624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:16,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:16,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 19:22:16,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509098078] [2022-01-31 19:22:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:16,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 19:22:16,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 19:22:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:22:16,146 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:16,227 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-01-31 19:22:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 19:22:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-01-31 19:22:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:16,228 INFO L225 Difference]: With dead ends: 66 [2022-01-31 19:22:16,228 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 19:22:16,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:22:16,230 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:16,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 19:22:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 19:22:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-01-31 19:22:16,243 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 56 [2022-01-31 19:22:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:16,243 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-01-31 19:22:16,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-01-31 19:22:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 19:22:16,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:16,244 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:16,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 19:22:16,244 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1935390110, now seen corresponding path program 5 times [2022-01-31 19:22:16,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:16,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248075472] [2022-01-31 19:22:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:16,246 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:16,247 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:16,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:16,248 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 19:22:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 19:22:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:22:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:16,320 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:16,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248075472] [2022-01-31 19:22:16,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [248075472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:16,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:16,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 19:22:16,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29917451] [2022-01-31 19:22:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:16,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 19:22:16,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 19:22:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:22:16,321 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:16,409 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-01-31 19:22:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 19:22:16,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-01-31 19:22:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:16,409 INFO L225 Difference]: With dead ends: 68 [2022-01-31 19:22:16,409 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 19:22:16,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 19:22:16,411 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:16,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 32 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 19:22:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-31 19:22:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-01-31 19:22:16,417 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 58 [2022-01-31 19:22:16,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:16,417 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-01-31 19:22:16,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,417 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-01-31 19:22:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 19:22:16,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:16,419 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:16,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 19:22:16,420 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 904863556, now seen corresponding path program 6 times [2022-01-31 19:22:16,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:16,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484167437] [2022-01-31 19:22:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:16,425 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:16,425 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:16,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:16,426 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 19:22:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:22:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 19:22:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:16,520 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:16,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484167437] [2022-01-31 19:22:16,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1484167437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:16,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:16,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 19:22:16,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107137748] [2022-01-31 19:22:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:16,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 19:22:16,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 19:22:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 19:22:16,522 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:16,617 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-01-31 19:22:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 19:22:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-31 19:22:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:16,617 INFO L225 Difference]: With dead ends: 70 [2022-01-31 19:22:16,617 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 19:22:16,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:22:16,618 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:16,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 19:22:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-01-31 19:22:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-01-31 19:22:16,623 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2022-01-31 19:22:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:16,623 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-01-31 19:22:16,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-01-31 19:22:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 19:22:16,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:16,624 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:16,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 19:22:16,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1210563674, now seen corresponding path program 7 times [2022-01-31 19:22:16,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:16,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268145624] [2022-01-31 19:22:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:16,626 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:16,626 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:16,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:16,628 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 19:22:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 19:22:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 19:22:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:16,700 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:16,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268145624] [2022-01-31 19:22:16,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268145624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:16,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:16,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 19:22:16,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591211757] [2022-01-31 19:22:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:16,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 19:22:16,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 19:22:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 19:22:16,701 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:16,838 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-01-31 19:22:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 19:22:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-01-31 19:22:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:16,839 INFO L225 Difference]: With dead ends: 72 [2022-01-31 19:22:16,839 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 19:22:16,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:22:16,840 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:16,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 19:22:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-01-31 19:22:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-31 19:22:16,844 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 62 [2022-01-31 19:22:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:16,844 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-31 19:22:16,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-31 19:22:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 19:22:16,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:16,844 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:16,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 19:22:16,845 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1678366600, now seen corresponding path program 8 times [2022-01-31 19:22:16,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:16,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275871481] [2022-01-31 19:22:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:16,846 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:16,846 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:16,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:16,847 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 19:22:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 19:22:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:22:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:16,946 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:16,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275871481] [2022-01-31 19:22:16,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1275871481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:16,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:16,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 19:22:16,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688882872] [2022-01-31 19:22:16,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:16,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 19:22:16,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 19:22:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:22:16,947 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:17,051 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-01-31 19:22:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 19:22:17,051 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-31 19:22:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:17,051 INFO L225 Difference]: With dead ends: 74 [2022-01-31 19:22:17,051 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 19:22:17,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:22:17,053 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:17,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 19:22:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 19:22:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-31 19:22:17,064 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 64 [2022-01-31 19:22:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:17,064 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-31 19:22:17,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-31 19:22:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 19:22:17,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:17,067 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:17,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 19:22:17,067 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash -903480598, now seen corresponding path program 9 times [2022-01-31 19:22:17,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:17,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918483728] [2022-01-31 19:22:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:17,070 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:17,070 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:17,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:17,072 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 19:22:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 19:22:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:22:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:17,159 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:17,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918483728] [2022-01-31 19:22:17,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1918483728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:17,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:17,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 19:22:17,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907357964] [2022-01-31 19:22:17,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:17,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 19:22:17,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:17,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 19:22:17,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:22:17,160 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:17,295 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-01-31 19:22:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 19:22:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-01-31 19:22:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:17,297 INFO L225 Difference]: With dead ends: 76 [2022-01-31 19:22:17,297 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 19:22:17,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:22:17,298 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:17,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 42 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 19:22:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-01-31 19:22:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-01-31 19:22:17,302 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 66 [2022-01-31 19:22:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:17,302 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-01-31 19:22:17,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-01-31 19:22:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 19:22:17,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:17,304 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:17,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 19:22:17,304 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash 432459212, now seen corresponding path program 10 times [2022-01-31 19:22:17,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:17,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826389600] [2022-01-31 19:22:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:17,306 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:17,306 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:17,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:17,307 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 19:22:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:22:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 19:22:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:17,419 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826389600] [2022-01-31 19:22:17,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1826389600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:17,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:17,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:22:17,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16921818] [2022-01-31 19:22:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:17,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:22:17,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:22:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:22:17,421 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:17,570 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-01-31 19:22:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 19:22:17,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2022-01-31 19:22:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:17,571 INFO L225 Difference]: With dead ends: 78 [2022-01-31 19:22:17,571 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 19:22:17,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:22:17,573 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:17,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 52 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 19:22:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-31 19:22:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-01-31 19:22:17,577 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 68 [2022-01-31 19:22:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:17,578 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-01-31 19:22:17,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-01-31 19:22:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 19:22:17,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:17,578 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:17,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 19:22:17,578 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:17,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash 75395118, now seen corresponding path program 11 times [2022-01-31 19:22:17,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:17,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248212492] [2022-01-31 19:22:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:17,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:17,582 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:17,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:17,583 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 19:22:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 19:22:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 19:22:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:17,692 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:17,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248212492] [2022-01-31 19:22:17,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1248212492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:17,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:17,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 19:22:17,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745638979] [2022-01-31 19:22:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:17,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 19:22:17,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:17,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 19:22:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 19:22:17,694 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:17,849 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2022-01-31 19:22:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:22:17,849 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-01-31 19:22:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:17,850 INFO L225 Difference]: With dead ends: 80 [2022-01-31 19:22:17,850 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 19:22:17,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:22:17,851 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:17,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 42 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 19:22:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-01-31 19:22:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-01-31 19:22:17,855 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 70 [2022-01-31 19:22:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:17,855 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-01-31 19:22:17,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-01-31 19:22:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 19:22:17,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:17,856 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:17,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 19:22:17,856 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 534184464, now seen corresponding path program 12 times [2022-01-31 19:22:17,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:17,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873772334] [2022-01-31 19:22:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:17,858 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:17,858 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:17,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:17,858 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 19:22:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:22:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:22:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:17,980 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873772334] [2022-01-31 19:22:17,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [873772334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:17,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:17,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:22:17,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082607962] [2022-01-31 19:22:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:17,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:22:17,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:22:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:22:17,981 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:18,141 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2022-01-31 19:22:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 19:22:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2022-01-31 19:22:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:18,142 INFO L225 Difference]: With dead ends: 82 [2022-01-31 19:22:18,142 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 19:22:18,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:22:18,142 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:18,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 37 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 19:22:18,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-01-31 19:22:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:18,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-01-31 19:22:18,147 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 72 [2022-01-31 19:22:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:18,147 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-01-31 19:22:18,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-01-31 19:22:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 19:22:18,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:18,148 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:18,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 19:22:18,148 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash -950885518, now seen corresponding path program 13 times [2022-01-31 19:22:18,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:18,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23429379] [2022-01-31 19:22:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:18,149 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:18,149 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:18,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:18,150 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 19:22:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 19:22:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:22:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:18,285 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:18,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23429379] [2022-01-31 19:22:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [23429379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:18,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:18,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 19:22:18,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582370528] [2022-01-31 19:22:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:18,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 19:22:18,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:18,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 19:22:18,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:22:18,287 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:18,433 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2022-01-31 19:22:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 19:22:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-01-31 19:22:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:18,434 INFO L225 Difference]: With dead ends: 84 [2022-01-31 19:22:18,434 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 19:22:18,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:22:18,435 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:18,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 37 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:22:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 19:22:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-01-31 19:22:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-01-31 19:22:18,439 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 74 [2022-01-31 19:22:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:18,439 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-01-31 19:22:18,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-01-31 19:22:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 19:22:18,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:18,440 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:18,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 19:22:18,440 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2120971348, now seen corresponding path program 14 times [2022-01-31 19:22:18,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:18,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428707977] [2022-01-31 19:22:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:18,442 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:18,442 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:18,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:18,443 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 19:22:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:22:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 19:22:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:18,598 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428707977] [2022-01-31 19:22:18,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1428707977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:18,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:18,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 19:22:18,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803957861] [2022-01-31 19:22:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:18,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 19:22:18,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 19:22:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 19:22:18,599 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:18,804 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-01-31 19:22:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 19:22:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-01-31 19:22:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:18,805 INFO L225 Difference]: With dead ends: 86 [2022-01-31 19:22:18,805 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 19:22:18,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:22:18,806 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 49 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:18,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 47 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 19:22:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-01-31 19:22:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-01-31 19:22:18,811 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 76 [2022-01-31 19:22:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:18,811 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-01-31 19:22:18,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-01-31 19:22:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 19:22:18,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:18,811 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:18,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 19:22:18,812 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash -762080074, now seen corresponding path program 15 times [2022-01-31 19:22:18,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677300822] [2022-01-31 19:22:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:18,813 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:18,813 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:18,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:18,814 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 19:22:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 19:22:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 19:22:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:18,984 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:18,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677300822] [2022-01-31 19:22:18,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1677300822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:18,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:18,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 19:22:18,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072815847] [2022-01-31 19:22:18,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:18,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 19:22:18,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 19:22:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:22:18,986 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:19,212 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2022-01-31 19:22:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 19:22:19,212 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-01-31 19:22:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:19,213 INFO L225 Difference]: With dead ends: 88 [2022-01-31 19:22:19,213 INFO L226 Difference]: Without dead ends: 64 [2022-01-31 19:22:19,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:22:19,214 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:19,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 47 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-31 19:22:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-01-31 19:22:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-01-31 19:22:19,219 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 78 [2022-01-31 19:22:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:19,219 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-01-31 19:22:19,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-01-31 19:22:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 19:22:19,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:19,220 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:19,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 19:22:19,220 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1120590696, now seen corresponding path program 16 times [2022-01-31 19:22:19,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:19,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193985157] [2022-01-31 19:22:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:19,221 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:19,221 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:19,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:19,222 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 19:22:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:22:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:22:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:19,388 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:19,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193985157] [2022-01-31 19:22:19,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193985157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:19,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:19,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:22:19,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035125276] [2022-01-31 19:22:19,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:19,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:22:19,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:22:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:22:19,389 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:19,650 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-01-31 19:22:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 19:22:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2022-01-31 19:22:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:19,651 INFO L225 Difference]: With dead ends: 90 [2022-01-31 19:22:19,651 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 19:22:19,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:22:19,652 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:19,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 62 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 19:22:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-01-31 19:22:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-01-31 19:22:19,659 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 80 [2022-01-31 19:22:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:19,659 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-01-31 19:22:19,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-01-31 19:22:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 19:22:19,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:19,660 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:19,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 19:22:19,660 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2051914758, now seen corresponding path program 17 times [2022-01-31 19:22:19,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:19,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400295983] [2022-01-31 19:22:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:19,661 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:19,661 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:19,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:19,662 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 19:22:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 19:22:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:22:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:19,829 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:19,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400295983] [2022-01-31 19:22:19,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1400295983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:19,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:19,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 19:22:19,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342304594] [2022-01-31 19:22:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:19,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 19:22:19,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 19:22:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:22:19,830 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:20,076 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2022-01-31 19:22:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:22:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2022-01-31 19:22:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:20,078 INFO L225 Difference]: With dead ends: 92 [2022-01-31 19:22:20,078 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 19:22:20,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:22:20,079 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:20,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 19:22:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-01-31 19:22:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-31 19:22:20,084 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 82 [2022-01-31 19:22:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:20,085 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-31 19:22:20,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-31 19:22:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 19:22:20,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:20,085 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:20,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 19:22:20,085 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash 593826524, now seen corresponding path program 18 times [2022-01-31 19:22:20,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:20,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530925202] [2022-01-31 19:22:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:20,087 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:20,087 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:20,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:20,088 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 19:22:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:22:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 19:22:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:20,290 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:20,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530925202] [2022-01-31 19:22:20,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1530925202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:20,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:20,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:22:20,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479925517] [2022-01-31 19:22:20,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:20,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:22:20,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:22:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:22:20,292 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:20,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:20,571 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-01-31 19:22:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 19:22:20,572 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 84 [2022-01-31 19:22:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:20,572 INFO L225 Difference]: With dead ends: 94 [2022-01-31 19:22:20,572 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 19:22:20,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:22:20,573 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:20,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 47 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 19:22:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-01-31 19:22:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-01-31 19:22:20,579 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 84 [2022-01-31 19:22:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:20,579 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-01-31 19:22:20,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-01-31 19:22:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 19:22:20,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:20,580 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:20,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 19:22:20,580 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 530559294, now seen corresponding path program 19 times [2022-01-31 19:22:20,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:20,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037703752] [2022-01-31 19:22:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:20,582 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:20,582 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:20,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:20,583 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 19:22:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 19:22:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 19:22:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:20,779 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037703752] [2022-01-31 19:22:20,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2037703752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:20,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:20,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 19:22:20,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762353027] [2022-01-31 19:22:20,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:20,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 19:22:20,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 19:22:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:22:20,780 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:21,090 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-01-31 19:22:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 19:22:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-01-31 19:22:21,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:21,091 INFO L225 Difference]: With dead ends: 96 [2022-01-31 19:22:21,091 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 19:22:21,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:22:21,092 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:21,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 42 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 19:22:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-01-31 19:22:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-01-31 19:22:21,098 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 86 [2022-01-31 19:22:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:21,098 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-01-31 19:22:21,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-01-31 19:22:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 19:22:21,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:21,099 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:21,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 19:22:21,099 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash -139706592, now seen corresponding path program 20 times [2022-01-31 19:22:21,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:21,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041122444] [2022-01-31 19:22:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:21,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:21,101 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:21,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:21,102 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 19:22:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:22:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:22:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:21,332 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:21,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041122444] [2022-01-31 19:22:21,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041122444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:21,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:21,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:22:21,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427060188] [2022-01-31 19:22:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:21,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:22:21,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:22:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:22:21,333 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:21,640 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2022-01-31 19:22:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 19:22:21,640 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 88 [2022-01-31 19:22:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:21,641 INFO L225 Difference]: With dead ends: 98 [2022-01-31 19:22:21,641 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 19:22:21,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:22:21,642 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:21,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 42 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 19:22:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-01-31 19:22:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-01-31 19:22:21,648 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 88 [2022-01-31 19:22:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:21,648 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-01-31 19:22:21,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-01-31 19:22:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-31 19:22:21,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:21,649 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:21,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 19:22:21,649 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash -20128638, now seen corresponding path program 21 times [2022-01-31 19:22:21,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997660338] [2022-01-31 19:22:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:21,650 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:21,650 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:21,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:21,651 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 19:22:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 19:22:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:22:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:21,897 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997660338] [2022-01-31 19:22:21,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [997660338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:21,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:21,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 19:22:21,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868672050] [2022-01-31 19:22:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:21,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 19:22:21,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 19:22:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:22:21,898 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:22,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:22,242 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-01-31 19:22:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 19:22:22,243 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2022-01-31 19:22:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:22,243 INFO L225 Difference]: With dead ends: 100 [2022-01-31 19:22:22,243 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 19:22:22,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 19:22:22,244 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:22,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 42 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 19:22:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-01-31 19:22:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-01-31 19:22:22,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 90 [2022-01-31 19:22:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:22,251 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-01-31 19:22:22,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-01-31 19:22:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 19:22:22,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:22,251 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:22,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 19:22:22,252 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1069831836, now seen corresponding path program 22 times [2022-01-31 19:22:22,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:22,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685133912] [2022-01-31 19:22:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:22,253 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:22,253 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:22,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:22,254 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 19:22:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:22:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:22,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 19:22:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:22,505 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:22,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685133912] [2022-01-31 19:22:22,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1685133912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:22,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:22,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 19:22:22,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254353374] [2022-01-31 19:22:22,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:22,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 19:22:22,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:22,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 19:22:22,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:22:22,523 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:22,858 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-01-31 19:22:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 19:22:22,858 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2022-01-31 19:22:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:22,859 INFO L225 Difference]: With dead ends: 102 [2022-01-31 19:22:22,859 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 19:22:22,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:22:22,860 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 65 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:22,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 42 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 19:22:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-01-31 19:22:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-01-31 19:22:22,866 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 92 [2022-01-31 19:22:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:22,866 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-01-31 19:22:22,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-01-31 19:22:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 19:22:22,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:22,867 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:22,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 19:22:22,867 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:22,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -517290554, now seen corresponding path program 23 times [2022-01-31 19:22:22,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:22,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965219364] [2022-01-31 19:22:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:22,869 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:22,869 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:22,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:22,870 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 19:22:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 19:22:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 19:22:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:23,166 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:23,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965219364] [2022-01-31 19:22:23,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1965219364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:23,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:23,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 19:22:23,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840097934] [2022-01-31 19:22:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:23,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 19:22:23,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 19:22:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:22:23,167 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:23,565 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2022-01-31 19:22:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 19:22:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2022-01-31 19:22:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:23,566 INFO L225 Difference]: With dead ends: 104 [2022-01-31 19:22:23,566 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 19:22:23,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 19:22:23,567 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 67 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:23,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 62 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 19:22:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-01-31 19:22:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-01-31 19:22:23,574 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 94 [2022-01-31 19:22:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:23,575 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-01-31 19:22:23,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-01-31 19:22:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 19:22:23,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:23,576 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:23,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 19:22:23,576 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2101063256, now seen corresponding path program 24 times [2022-01-31 19:22:23,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:23,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338428535] [2022-01-31 19:22:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:23,580 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:23,580 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:23,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:23,581 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 19:22:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:22:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:22:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:23,860 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:23,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338428535] [2022-01-31 19:22:23,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1338428535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:23,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:23,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:22:23,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13465055] [2022-01-31 19:22:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:23,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:22:23,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:22:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:22:23,861 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:24,237 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2022-01-31 19:22:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 19:22:24,247 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2022-01-31 19:22:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:24,248 INFO L225 Difference]: With dead ends: 106 [2022-01-31 19:22:24,248 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 19:22:24,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:22:24,249 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:24,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 42 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 19:22:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-01-31 19:22:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-01-31 19:22:24,256 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 96 [2022-01-31 19:22:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:24,256 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-01-31 19:22:24,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-01-31 19:22:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 19:22:24,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:24,257 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:24,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 19:22:24,257 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash 606760202, now seen corresponding path program 25 times [2022-01-31 19:22:24,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86376925] [2022-01-31 19:22:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:24,258 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:24,258 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:24,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:24,260 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 19:22:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 19:22:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:22:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:24,578 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86376925] [2022-01-31 19:22:24,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [86376925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:24,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:24,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:22:24,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779192957] [2022-01-31 19:22:24,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:24,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:22:24,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:22:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:22:24,579 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:24,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:24,955 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2022-01-31 19:22:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:22:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2022-01-31 19:22:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:24,956 INFO L225 Difference]: With dead ends: 108 [2022-01-31 19:22:24,956 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 19:22:24,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:22:24,957 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 71 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:24,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 42 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 19:22:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2022-01-31 19:22:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-01-31 19:22:24,964 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 98 [2022-01-31 19:22:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:24,964 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-01-31 19:22:24,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-01-31 19:22:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-31 19:22:24,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:24,965 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:24,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 19:22:24,965 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash 74921964, now seen corresponding path program 26 times [2022-01-31 19:22:24,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:24,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387856879] [2022-01-31 19:22:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:24,967 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:24,967 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:24,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:24,968 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 19:22:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:25,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:22:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 19:22:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:25,274 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:25,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387856879] [2022-01-31 19:22:25,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [387856879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:25,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:25,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:22:25,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240903683] [2022-01-31 19:22:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:25,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:22:25,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:22:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:22:25,275 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:25,684 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2022-01-31 19:22:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 19:22:25,684 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 100 [2022-01-31 19:22:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:25,685 INFO L225 Difference]: With dead ends: 110 [2022-01-31 19:22:25,685 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 19:22:25,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 19:22:25,686 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:25,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 52 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 19:22:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-01-31 19:22:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-01-31 19:22:25,705 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 100 [2022-01-31 19:22:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:25,705 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-01-31 19:22:25,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-01-31 19:22:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 19:22:25,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:25,706 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:25,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 19:22:25,706 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:25,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:25,706 INFO L85 PathProgramCache]: Analyzing trace with hash 79483470, now seen corresponding path program 27 times [2022-01-31 19:22:25,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:25,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588604539] [2022-01-31 19:22:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:25,708 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:25,708 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:25,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:25,709 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 19:22:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 19:22:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 19:22:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:26,016 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588604539] [2022-01-31 19:22:26,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [588604539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:26,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:26,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:22:26,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282891395] [2022-01-31 19:22:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:26,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:22:26,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:22:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:22:26,018 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:26,459 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2022-01-31 19:22:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 19:22:26,463 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 102 [2022-01-31 19:22:26,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:26,464 INFO L225 Difference]: With dead ends: 112 [2022-01-31 19:22:26,464 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 19:22:26,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:22:26,465 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:26,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 37 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 19:22:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-01-31 19:22:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-01-31 19:22:26,473 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 102 [2022-01-31 19:22:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:26,473 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-01-31 19:22:26,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-01-31 19:22:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 19:22:26,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:26,474 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:26,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 19:22:26,474 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:26,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash 168123440, now seen corresponding path program 28 times [2022-01-31 19:22:26,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:26,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045602022] [2022-01-31 19:22:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:26,475 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:26,475 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:26,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:26,477 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 19:22:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:22:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:22:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:26,814 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045602022] [2022-01-31 19:22:26,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1045602022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:26,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:26,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:22:26,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932264769] [2022-01-31 19:22:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:26,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:22:26,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:22:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:22:26,815 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:27,264 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2022-01-31 19:22:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 19:22:27,265 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 104 [2022-01-31 19:22:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:27,265 INFO L225 Difference]: With dead ends: 114 [2022-01-31 19:22:27,265 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 19:22:27,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 19:22:27,266 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 77 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:27,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 47 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 19:22:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-01-31 19:22:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2022-01-31 19:22:27,276 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 104 [2022-01-31 19:22:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:27,276 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2022-01-31 19:22:27,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 31 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2022-01-31 19:22:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-31 19:22:27,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:27,277 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:27,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 19:22:27,277 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -548211310, now seen corresponding path program 29 times [2022-01-31 19:22:27,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:27,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057615508] [2022-01-31 19:22:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:27,279 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:27,279 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:27,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:27,280 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 19:22:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 19:22:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:22:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:27,619 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:27,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057615508] [2022-01-31 19:22:27,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2057615508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:27,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:27,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 19:22:27,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474624358] [2022-01-31 19:22:27,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:27,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 19:22:27,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 19:22:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:22:27,620 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:28,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:28,133 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2022-01-31 19:22:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 19:22:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 106 [2022-01-31 19:22:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:28,134 INFO L225 Difference]: With dead ends: 116 [2022-01-31 19:22:28,134 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 19:22:28,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 19:22:28,135 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:28,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 47 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 19:22:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-01-31 19:22:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2022-01-31 19:22:28,143 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 106 [2022-01-31 19:22:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:28,144 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2022-01-31 19:22:28,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2022-01-31 19:22:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 19:22:28,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:28,144 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:28,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 19:22:28,144 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1751138700, now seen corresponding path program 30 times [2022-01-31 19:22:28,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:28,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714452429] [2022-01-31 19:22:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:28,146 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:28,146 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:28,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:28,147 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 19:22:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:22:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 19:22:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:28,548 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:28,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714452429] [2022-01-31 19:22:28,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1714452429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:28,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:28,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 19:22:28,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703239542] [2022-01-31 19:22:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:28,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 19:22:28,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 19:22:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:22:28,549 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:29,037 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2022-01-31 19:22:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 19:22:29,037 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2022-01-31 19:22:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:29,038 INFO L225 Difference]: With dead ends: 118 [2022-01-31 19:22:29,038 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 19:22:29,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:22:29,039 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:29,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 42 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:29,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 19:22:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-01-31 19:22:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2022-01-31 19:22:29,048 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 108 [2022-01-31 19:22:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:29,048 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2022-01-31 19:22:29,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 33 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2022-01-31 19:22:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 19:22:29,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:29,049 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:29,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 19:22:29,049 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1876809430, now seen corresponding path program 31 times [2022-01-31 19:22:29,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312378318] [2022-01-31 19:22:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:29,051 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:29,051 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:29,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:29,052 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 19:22:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 19:22:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 19:22:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:29,443 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312378318] [2022-01-31 19:22:29,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [312378318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:29,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:29,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:22:29,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915391465] [2022-01-31 19:22:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:29,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:22:29,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:22:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:22:29,446 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:29,967 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2022-01-31 19:22:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:22:29,968 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 110 [2022-01-31 19:22:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:29,968 INFO L225 Difference]: With dead ends: 120 [2022-01-31 19:22:29,968 INFO L226 Difference]: Without dead ends: 96 [2022-01-31 19:22:29,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:22:29,969 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:29,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 42 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-31 19:22:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2022-01-31 19:22:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 87 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2022-01-31 19:22:29,978 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 110 [2022-01-31 19:22:29,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:29,978 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2022-01-31 19:22:29,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:29,978 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2022-01-31 19:22:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-31 19:22:29,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:29,979 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:29,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 19:22:29,982 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:29,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 821518008, now seen corresponding path program 32 times [2022-01-31 19:22:29,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:29,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407434356] [2022-01-31 19:22:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:29,984 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:29,984 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:29,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:29,986 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 19:22:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:22:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:22:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:30,419 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:30,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407434356] [2022-01-31 19:22:30,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [407434356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:30,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:30,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:22:30,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876464787] [2022-01-31 19:22:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:30,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:22:30,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:22:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:22:30,420 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:30,973 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2022-01-31 19:22:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 19:22:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-01-31 19:22:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:30,973 INFO L225 Difference]: With dead ends: 122 [2022-01-31 19:22:30,973 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 19:22:30,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:22:30,976 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 85 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:30,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 47 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 19:22:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-01-31 19:22:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-01-31 19:22:30,986 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 112 [2022-01-31 19:22:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:30,986 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-01-31 19:22:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-01-31 19:22:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 19:22:30,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:30,987 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:30,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 19:22:30,987 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash 298743322, now seen corresponding path program 33 times [2022-01-31 19:22:30,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:30,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232636083] [2022-01-31 19:22:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:30,989 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:30,989 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:30,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:30,990 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 19:22:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 19:22:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:22:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:31,445 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:31,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232636083] [2022-01-31 19:22:31,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [232636083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:31,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:31,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 19:22:31,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413522867] [2022-01-31 19:22:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:31,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 19:22:31,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 19:22:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:22:31,446 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:32,017 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2022-01-31 19:22:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 19:22:32,018 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 114 [2022-01-31 19:22:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:32,018 INFO L225 Difference]: With dead ends: 124 [2022-01-31 19:22:32,018 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 19:22:32,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 19:22:32,021 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 87 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:32,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 42 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 19:22:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-01-31 19:22:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-01-31 19:22:32,032 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 114 [2022-01-31 19:22:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:32,032 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-01-31 19:22:32,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:32,032 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-01-31 19:22:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 19:22:32,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:32,033 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:32,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 19:22:32,033 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 423443708, now seen corresponding path program 34 times [2022-01-31 19:22:32,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:32,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954910219] [2022-01-31 19:22:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:32,034 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:32,034 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:32,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:32,036 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 19:22:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:22:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 19:22:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:32,502 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:32,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954910219] [2022-01-31 19:22:32,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954910219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:32,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:32,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:22:32,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368449618] [2022-01-31 19:22:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:32,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:22:32,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:22:32,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:22:32,504 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 37 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:33,084 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2022-01-31 19:22:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 19:22:33,084 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 37 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 116 [2022-01-31 19:22:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:33,085 INFO L225 Difference]: With dead ends: 126 [2022-01-31 19:22:33,085 INFO L226 Difference]: Without dead ends: 102 [2022-01-31 19:22:33,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 19:22:33,086 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 89 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:33,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 42 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-31 19:22:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2022-01-31 19:22:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.032258064516129) internal successors, (96), 93 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2022-01-31 19:22:33,096 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 116 [2022-01-31 19:22:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:33,097 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2022-01-31 19:22:33,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 37 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2022-01-31 19:22:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 19:22:33,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:33,097 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:33,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 19:22:33,097 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1430366, now seen corresponding path program 35 times [2022-01-31 19:22:33,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:33,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303258413] [2022-01-31 19:22:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:33,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:33,101 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:33,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:33,102 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:33,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 19:22:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 19:22:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 19:22:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:33,563 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303258413] [2022-01-31 19:22:33,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [303258413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:33,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:33,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:22:33,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100481698] [2022-01-31 19:22:33,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:33,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:22:33,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:22:33,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:22:33,564 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:34,214 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2022-01-31 19:22:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:22:34,214 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2022-01-31 19:22:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:34,214 INFO L225 Difference]: With dead ends: 128 [2022-01-31 19:22:34,214 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 19:22:34,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:22:34,215 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 91 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:34,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 52 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 19:22:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-01-31 19:22:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-01-31 19:22:34,227 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 118 [2022-01-31 19:22:34,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:34,227 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-01-31 19:22:34,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-01-31 19:22:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 19:22:34,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:34,228 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:34,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 19:22:34,228 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1826465472, now seen corresponding path program 36 times [2022-01-31 19:22:34,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978876361] [2022-01-31 19:22:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:34,230 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:34,230 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:34,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:34,232 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 19:22:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:34,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:22:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:22:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:34,732 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:34,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978876361] [2022-01-31 19:22:34,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978876361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:34,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:34,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:22:34,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130897746] [2022-01-31 19:22:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:34,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:22:34,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:22:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:22:34,733 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 39 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:35,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:35,410 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2022-01-31 19:22:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 19:22:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 39 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-01-31 19:22:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:35,412 INFO L225 Difference]: With dead ends: 130 [2022-01-31 19:22:35,412 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 19:22:35,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:22:35,413 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:35,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 42 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 19:22:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-01-31 19:22:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-01-31 19:22:35,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 120 [2022-01-31 19:22:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:35,424 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-01-31 19:22:35,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 39 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-01-31 19:22:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-31 19:22:35,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:35,425 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:35,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 19:22:35,425 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:35,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1792741726, now seen corresponding path program 37 times [2022-01-31 19:22:35,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:35,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165200787] [2022-01-31 19:22:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:35,427 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:35,427 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:35,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:35,428 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:36,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 19:22:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 19:22:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:22:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:36,040 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:36,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165200787] [2022-01-31 19:22:36,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1165200787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:36,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:36,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 19:22:36,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943009815] [2022-01-31 19:22:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:36,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 19:22:36,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 19:22:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:22:36,042 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:36,774 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2022-01-31 19:22:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 19:22:36,775 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2022-01-31 19:22:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:36,775 INFO L225 Difference]: With dead ends: 132 [2022-01-31 19:22:36,775 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 19:22:36,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 19:22:36,777 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 95 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:36,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 72 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 19:22:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-01-31 19:22:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-01-31 19:22:36,808 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 122 [2022-01-31 19:22:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:36,808 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-01-31 19:22:36,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.268292682926829) internal successors, (93), 40 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-01-31 19:22:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 19:22:36,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:36,808 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:36,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 19:22:36,808 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash 551007108, now seen corresponding path program 38 times [2022-01-31 19:22:36,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:36,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705161074] [2022-01-31 19:22:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:36,810 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:36,810 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:36,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:36,812 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 19:22:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:22:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 19:22:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:37,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:37,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705161074] [2022-01-31 19:22:37,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [705161074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:37,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:37,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:22:37,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997843862] [2022-01-31 19:22:37,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:37,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:22:37,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:22:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:22:37,373 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:38,130 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2022-01-31 19:22:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 19:22:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-01-31 19:22:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:38,131 INFO L225 Difference]: With dead ends: 134 [2022-01-31 19:22:38,131 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 19:22:38,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:22:38,132 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:38,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 62 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 19:22:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-01-31 19:22:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2022-01-31 19:22:38,144 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 124 [2022-01-31 19:22:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:38,144 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2022-01-31 19:22:38,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2022-01-31 19:22:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 19:22:38,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:38,155 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:38,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 19:22:38,155 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1964193818, now seen corresponding path program 39 times [2022-01-31 19:22:38,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:38,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005596529] [2022-01-31 19:22:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:38,157 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:38,158 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:38,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:38,159 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 19:22:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 19:22:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 19:22:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:38,752 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:38,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005596529] [2022-01-31 19:22:38,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1005596529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:38,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:38,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:22:38,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579482569] [2022-01-31 19:22:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:38,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:22:38,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:22:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:22:38,753 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:39,546 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2022-01-31 19:22:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:22:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 126 [2022-01-31 19:22:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:39,547 INFO L225 Difference]: With dead ends: 136 [2022-01-31 19:22:39,547 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 19:22:39,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:22:39,549 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 99 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:39,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 52 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 19:22:39,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-01-31 19:22:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2022-01-31 19:22:39,561 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 126 [2022-01-31 19:22:39,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:39,561 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2022-01-31 19:22:39,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2022-01-31 19:22:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 19:22:39,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:39,562 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:39,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 19:22:39,562 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1005696056, now seen corresponding path program 40 times [2022-01-31 19:22:39,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:39,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531430786] [2022-01-31 19:22:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:39,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:39,564 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:39,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:39,565 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 19:22:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:22:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:22:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:40,160 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:40,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531430786] [2022-01-31 19:22:40,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1531430786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:40,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:40,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:22:40,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457354922] [2022-01-31 19:22:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:40,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:22:40,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:22:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:22:40,162 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 43 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:40,925 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2022-01-31 19:22:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 19:22:40,925 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 43 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-01-31 19:22:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:40,926 INFO L225 Difference]: With dead ends: 138 [2022-01-31 19:22:40,926 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 19:22:40,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 19:22:40,928 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:40,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 42 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 19:22:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-01-31 19:22:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2022-01-31 19:22:40,946 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 128 [2022-01-31 19:22:40,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:40,946 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2022-01-31 19:22:40,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 43 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2022-01-31 19:22:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-31 19:22:40,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:40,947 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:40,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 19:22:40,947 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:40,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:40,947 INFO L85 PathProgramCache]: Analyzing trace with hash 987651882, now seen corresponding path program 41 times [2022-01-31 19:22:40,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:40,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818929812] [2022-01-31 19:22:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:40,949 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:40,949 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:40,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:40,952 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 19:22:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 19:22:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:22:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:41,570 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:41,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818929812] [2022-01-31 19:22:41,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [818929812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:41,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:41,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:22:41,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081439189] [2022-01-31 19:22:41,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:41,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:22:41,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:22:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:22:41,571 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:42,436 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2022-01-31 19:22:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 19:22:42,436 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 130 [2022-01-31 19:22:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:42,437 INFO L225 Difference]: With dead ends: 140 [2022-01-31 19:22:42,437 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 19:22:42,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 19:22:42,438 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 103 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:42,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 42 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 19:22:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-01-31 19:22:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2022-01-31 19:22:42,453 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 130 [2022-01-31 19:22:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:42,453 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2022-01-31 19:22:42,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2022-01-31 19:22:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-31 19:22:42,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:42,454 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:42,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 19:22:42,454 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:42,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1039606284, now seen corresponding path program 42 times [2022-01-31 19:22:42,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:42,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235317533] [2022-01-31 19:22:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:42,456 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:42,461 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:42,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:42,463 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 19:22:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:22:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 19:22:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:43,146 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:43,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235317533] [2022-01-31 19:22:43,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [235317533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:43,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:43,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:22:43,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383673318] [2022-01-31 19:22:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:43,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:22:43,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:22:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:22:43,148 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 46 states, 46 states have (on average 2.239130434782609) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:43,999 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2022-01-31 19:22:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 19:22:43,999 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.239130434782609) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 132 [2022-01-31 19:22:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:44,000 INFO L225 Difference]: With dead ends: 142 [2022-01-31 19:22:44,000 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 19:22:44,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 19:22:44,001 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 105 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:44,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 52 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 19:22:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-01-31 19:22:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2022-01-31 19:22:44,022 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 132 [2022-01-31 19:22:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:44,022 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2022-01-31 19:22:44,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.239130434782609) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2022-01-31 19:22:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 19:22:44,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:44,026 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:44,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 19:22:44,026 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash -571820946, now seen corresponding path program 43 times [2022-01-31 19:22:44,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:44,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273160588] [2022-01-31 19:22:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:44,029 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:44,029 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:44,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:44,031 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 19:22:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 19:22:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 19:22:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:44,699 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:44,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273160588] [2022-01-31 19:22:44,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [273160588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:44,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:44,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 19:22:44,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292503212] [2022-01-31 19:22:44,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:44,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 19:22:44,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 19:22:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 19:22:44,700 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:45,573 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2022-01-31 19:22:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:22:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2022-01-31 19:22:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:45,574 INFO L225 Difference]: With dead ends: 144 [2022-01-31 19:22:45,574 INFO L226 Difference]: Without dead ends: 120 [2022-01-31 19:22:45,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 19:22:45,575 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 107 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:45,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 47 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-31 19:22:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-01-31 19:22:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2022-01-31 19:22:45,591 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 134 [2022-01-31 19:22:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:45,591 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2022-01-31 19:22:45,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2022-01-31 19:22:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-31 19:22:45,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:45,593 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:45,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 19:22:45,593 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:45,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:45,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1329804880, now seen corresponding path program 44 times [2022-01-31 19:22:45,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:45,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042774787] [2022-01-31 19:22:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:45,604 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:45,604 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:45,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:45,606 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 19:22:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:22:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:22:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:46,280 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:46,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042774787] [2022-01-31 19:22:46,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2042774787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:46,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:46,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:22:46,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994140361] [2022-01-31 19:22:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:46,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:22:46,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:22:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:22:46,281 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 47 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:47,167 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2022-01-31 19:22:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 19:22:47,168 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 47 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 136 [2022-01-31 19:22:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:47,168 INFO L225 Difference]: With dead ends: 146 [2022-01-31 19:22:47,168 INFO L226 Difference]: Without dead ends: 122 [2022-01-31 19:22:47,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 19:22:47,169 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 109 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:47,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 67 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-31 19:22:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-01-31 19:22:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2022-01-31 19:22:47,185 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 136 [2022-01-31 19:22:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:47,185 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2022-01-31 19:22:47,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 47 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2022-01-31 19:22:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-31 19:22:47,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:47,186 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:47,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 19:22:47,188 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -863844430, now seen corresponding path program 45 times [2022-01-31 19:22:47,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:47,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719206403] [2022-01-31 19:22:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:47,190 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:47,190 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:47,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:47,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 19:22:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 19:22:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:22:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:47,881 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:47,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719206403] [2022-01-31 19:22:47,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1719206403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:47,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:47,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 19:22:47,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425733193] [2022-01-31 19:22:47,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:47,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 19:22:47,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 19:22:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:22:47,882 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:48,780 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2022-01-31 19:22:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:22:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-01-31 19:22:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:48,781 INFO L225 Difference]: With dead ends: 148 [2022-01-31 19:22:48,781 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 19:22:48,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 19:22:48,782 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:48,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 37 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 19:22:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2022-01-31 19:22:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2022-01-31 19:22:48,798 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 138 [2022-01-31 19:22:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:48,798 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2022-01-31 19:22:48,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2022-01-31 19:22:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-31 19:22:48,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:48,798 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:48,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 19:22:48,799 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash -131889004, now seen corresponding path program 46 times [2022-01-31 19:22:48,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:48,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403617056] [2022-01-31 19:22:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:48,800 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:48,800 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:48,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:48,802 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 19:22:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:22:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:49,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 19:22:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:49,526 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403617056] [2022-01-31 19:22:49,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [403617056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:49,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:49,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 19:22:49,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190963376] [2022-01-31 19:22:49,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:49,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 19:22:49,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:49,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 19:22:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:22:49,534 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:50,469 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2022-01-31 19:22:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 19:22:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2022-01-31 19:22:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:50,470 INFO L225 Difference]: With dead ends: 150 [2022-01-31 19:22:50,470 INFO L226 Difference]: Without dead ends: 126 [2022-01-31 19:22:50,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:22:50,472 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 113 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:50,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 47 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-31 19:22:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2022-01-31 19:22:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-01-31 19:22:50,488 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 140 [2022-01-31 19:22:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:50,488 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-01-31 19:22:50,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-01-31 19:22:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-31 19:22:50,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:50,489 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:50,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 19:22:50,489 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:50,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1097361162, now seen corresponding path program 47 times [2022-01-31 19:22:50,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:50,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678053963] [2022-01-31 19:22:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:50,491 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:50,491 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:50,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:50,493 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 19:22:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 19:22:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 19:22:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:51,339 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678053963] [2022-01-31 19:22:51,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [678053963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:51,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:51,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 19:22:51,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176883309] [2022-01-31 19:22:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:51,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 19:22:51,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 19:22:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 19:22:51,341 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:52,307 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2022-01-31 19:22:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 19:22:52,308 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 142 [2022-01-31 19:22:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:52,308 INFO L225 Difference]: With dead ends: 152 [2022-01-31 19:22:52,309 INFO L226 Difference]: Without dead ends: 128 [2022-01-31 19:22:52,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:22:52,310 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 115 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:52,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 47 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-31 19:22:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2022-01-31 19:22:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 119 states have internal predecessors, (122), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2022-01-31 19:22:52,342 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 142 [2022-01-31 19:22:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:52,342 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2022-01-31 19:22:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2022-01-31 19:22:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-31 19:22:52,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:52,343 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:52,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 19:22:52,343 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1203169064, now seen corresponding path program 48 times [2022-01-31 19:22:52,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:52,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460930529] [2022-01-31 19:22:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:52,345 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:52,345 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:52,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:52,348 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 19:22:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:22:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:22:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:53,181 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460930529] [2022-01-31 19:22:53,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [460930529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:53,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:53,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:22:53,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018842736] [2022-01-31 19:22:53,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:53,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:22:53,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:22:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:22:53,183 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 51 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:54,182 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2022-01-31 19:22:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 19:22:54,182 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 51 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 144 [2022-01-31 19:22:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:54,183 INFO L225 Difference]: With dead ends: 154 [2022-01-31 19:22:54,183 INFO L226 Difference]: Without dead ends: 130 [2022-01-31 19:22:54,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:22:54,184 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 117 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:54,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 57 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-31 19:22:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-01-31 19:22:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 121 states have (on average 1.024793388429752) internal successors, (124), 121 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2022-01-31 19:22:54,200 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 144 [2022-01-31 19:22:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:54,200 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2022-01-31 19:22:54,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 51 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2022-01-31 19:22:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-31 19:22:54,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:54,201 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:54,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 19:22:54,201 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 194652218, now seen corresponding path program 49 times [2022-01-31 19:22:54,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322095908] [2022-01-31 19:22:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:54,203 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:54,203 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:54,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:54,205 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 19:22:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 19:22:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:22:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:55,040 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322095908] [2022-01-31 19:22:55,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322095908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:55,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:55,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 19:22:55,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728306929] [2022-01-31 19:22:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:55,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 19:22:55,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 19:22:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:22:55,042 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 53 states, 53 states have (on average 2.207547169811321) internal successors, (117), 52 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:56,099 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2022-01-31 19:22:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 19:22:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.207547169811321) internal successors, (117), 52 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 146 [2022-01-31 19:22:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:56,100 INFO L225 Difference]: With dead ends: 156 [2022-01-31 19:22:56,100 INFO L226 Difference]: Without dead ends: 132 [2022-01-31 19:22:56,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:22:56,102 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 119 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:56,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 42 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:22:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-31 19:22:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2022-01-31 19:22:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.024390243902439) internal successors, (126), 123 states have internal predecessors, (126), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-01-31 19:22:56,119 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 146 [2022-01-31 19:22:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:56,120 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-01-31 19:22:56,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.207547169811321) internal successors, (117), 52 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-01-31 19:22:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-31 19:22:56,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:56,120 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:56,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 19:22:56,120 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:56,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash -823859428, now seen corresponding path program 50 times [2022-01-31 19:22:56,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:56,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261834122] [2022-01-31 19:22:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:56,122 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:56,122 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:56,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:56,125 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 19:22:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:22:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 19:22:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:56,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261834122] [2022-01-31 19:22:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [261834122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:56,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:56,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:22:56,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140587159] [2022-01-31 19:22:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:56,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:22:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:56,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:22:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:22:56,956 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 53 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:22:58,064 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2022-01-31 19:22:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 19:22:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 53 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 148 [2022-01-31 19:22:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:22:58,065 INFO L225 Difference]: With dead ends: 158 [2022-01-31 19:22:58,065 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 19:22:58,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 19:22:58,066 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 121 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:22:58,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 42 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:22:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 19:22:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-01-31 19:22:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:22:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2022-01-31 19:22:58,084 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 148 [2022-01-31 19:22:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:22:58,084 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2022-01-31 19:22:58,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 53 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:22:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2022-01-31 19:22:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 19:22:58,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:22:58,085 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:22:58,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 19:22:58,085 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:22:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:22:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash -361007746, now seen corresponding path program 51 times [2022-01-31 19:22:58,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:22:58,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398996027] [2022-01-31 19:22:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:22:58,086 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:22:58,086 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:22:58,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:22:58,089 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:22:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:22:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 19:22:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 19:22:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 19:22:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:22:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:22:58,989 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:22:58,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398996027] [2022-01-31 19:22:58,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398996027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:22:58,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:22:58,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 19:22:58,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981557117] [2022-01-31 19:22:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:22:58,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 19:22:58,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:22:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 19:22:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:22:58,991 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:00,083 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2022-01-31 19:23:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:23:00,084 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 150 [2022-01-31 19:23:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:00,084 INFO L225 Difference]: With dead ends: 160 [2022-01-31 19:23:00,084 INFO L226 Difference]: Without dead ends: 136 [2022-01-31 19:23:00,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 19:23:00,086 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 123 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:00,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 52 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-31 19:23:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-01-31 19:23:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2022-01-31 19:23:00,105 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 150 [2022-01-31 19:23:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:00,105 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2022-01-31 19:23:00,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2022-01-31 19:23:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-31 19:23:00,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:00,106 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:00,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 19:23:00,106 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2057827168, now seen corresponding path program 52 times [2022-01-31 19:23:00,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832449624] [2022-01-31 19:23:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:00,108 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:00,108 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:00,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:00,110 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 19:23:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:23:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:23:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:01,106 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:01,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832449624] [2022-01-31 19:23:01,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [832449624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:01,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:01,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 19:23:01,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989729604] [2022-01-31 19:23:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:01,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 19:23:01,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 19:23:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:23:01,108 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 56 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 55 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:02,260 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2022-01-31 19:23:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 19:23:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 55 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 152 [2022-01-31 19:23:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:02,261 INFO L225 Difference]: With dead ends: 162 [2022-01-31 19:23:02,261 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 19:23:02,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:23:02,261 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 125 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:02,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 57 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 19:23:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-01-31 19:23:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2022-01-31 19:23:02,287 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 152 [2022-01-31 19:23:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:02,287 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2022-01-31 19:23:02,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.1964285714285716) internal successors, (123), 55 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2022-01-31 19:23:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-31 19:23:02,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:02,287 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:02,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 19:23:02,288 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1314094910, now seen corresponding path program 53 times [2022-01-31 19:23:02,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:02,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163327648] [2022-01-31 19:23:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:02,289 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:02,289 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:02,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:02,291 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 19:23:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 19:23:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:23:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:03,220 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:03,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163327648] [2022-01-31 19:23:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [163327648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:03,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:03,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 19:23:03,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503669922] [2022-01-31 19:23:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 19:23:03,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 19:23:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 19:23:03,222 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:04,395 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2022-01-31 19:23:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:23:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 154 [2022-01-31 19:23:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:04,396 INFO L225 Difference]: With dead ends: 164 [2022-01-31 19:23:04,396 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 19:23:04,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 19:23:04,397 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 127 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:04,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 57 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 19:23:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-01-31 19:23:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2022-01-31 19:23:04,417 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 154 [2022-01-31 19:23:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:04,418 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2022-01-31 19:23:04,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.192982456140351) internal successors, (125), 56 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2022-01-31 19:23:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-31 19:23:04,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:04,418 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:04,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 19:23:04,418 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 969096612, now seen corresponding path program 54 times [2022-01-31 19:23:04,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:04,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917693871] [2022-01-31 19:23:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:04,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:04,420 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:04,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:04,422 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 19:23:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:23:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 19:23:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:05,371 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:05,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917693871] [2022-01-31 19:23:05,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [917693871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:05,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:05,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 19:23:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717559184] [2022-01-31 19:23:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:05,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 19:23:05,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 19:23:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:23:05,373 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 58 states, 58 states have (on average 2.189655172413793) internal successors, (127), 57 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:06,653 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2022-01-31 19:23:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 19:23:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.189655172413793) internal successors, (127), 57 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 156 [2022-01-31 19:23:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:06,654 INFO L225 Difference]: With dead ends: 166 [2022-01-31 19:23:06,654 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 19:23:06,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:23:06,655 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:06,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 57 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 19:23:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2022-01-31 19:23:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2022-01-31 19:23:06,675 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 156 [2022-01-31 19:23:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:06,675 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2022-01-31 19:23:06,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.189655172413793) internal successors, (127), 57 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2022-01-31 19:23:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-31 19:23:06,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:06,676 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:06,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 19:23:06,676 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 387860998, now seen corresponding path program 55 times [2022-01-31 19:23:06,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:06,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714522177] [2022-01-31 19:23:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:06,678 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:06,678 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:06,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:06,680 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 19:23:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 19:23:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 19:23:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:07,694 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714522177] [2022-01-31 19:23:07,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [714522177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:07,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:07,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 19:23:07,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431144657] [2022-01-31 19:23:07,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:07,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 19:23:07,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 19:23:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:23:07,696 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 58 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:08,958 INFO L93 Difference]: Finished difference Result 168 states and 176 transitions. [2022-01-31 19:23:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:23:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 58 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 158 [2022-01-31 19:23:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:08,959 INFO L225 Difference]: With dead ends: 168 [2022-01-31 19:23:08,959 INFO L226 Difference]: Without dead ends: 144 [2022-01-31 19:23:08,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:23:08,961 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:08,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 42 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-31 19:23:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2022-01-31 19:23:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 135 states have (on average 1.0222222222222221) internal successors, (138), 135 states have internal predecessors, (138), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2022-01-31 19:23:08,989 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 158 [2022-01-31 19:23:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:08,989 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2022-01-31 19:23:08,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 58 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2022-01-31 19:23:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-31 19:23:08,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:08,990 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:08,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 19:23:08,990 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash 166184424, now seen corresponding path program 56 times [2022-01-31 19:23:08,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:08,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332803362] [2022-01-31 19:23:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:08,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:08,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:08,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:08,994 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:10,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:10,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 19:23:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:23:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:23:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:10,092 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:10,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332803362] [2022-01-31 19:23:10,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [332803362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:10,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:10,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 19:23:10,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399676325] [2022-01-31 19:23:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:10,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 19:23:10,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 19:23:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:23:10,093 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 60 states, 60 states have (on average 2.183333333333333) internal successors, (131), 59 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:11,458 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2022-01-31 19:23:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 19:23:11,466 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.183333333333333) internal successors, (131), 59 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 160 [2022-01-31 19:23:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:11,466 INFO L225 Difference]: With dead ends: 170 [2022-01-31 19:23:11,467 INFO L226 Difference]: Without dead ends: 146 [2022-01-31 19:23:11,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:23:11,468 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 133 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:11,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 72 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-31 19:23:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2022-01-31 19:23:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 137 states have (on average 1.0218978102189782) internal successors, (140), 137 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2022-01-31 19:23:11,491 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 160 [2022-01-31 19:23:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:11,491 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2022-01-31 19:23:11,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.183333333333333) internal successors, (131), 59 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2022-01-31 19:23:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-31 19:23:11,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:11,492 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:11,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 19:23:11,492 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:11,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1883361610, now seen corresponding path program 57 times [2022-01-31 19:23:11,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:11,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185077714] [2022-01-31 19:23:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:11,493 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:11,493 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:11,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:11,496 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 19:23:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 19:23:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:23:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:12,568 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:12,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185077714] [2022-01-31 19:23:12,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1185077714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:12,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:12,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 19:23:12,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670561716] [2022-01-31 19:23:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:12,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 19:23:12,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 19:23:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 19:23:12,570 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 60 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:13,935 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2022-01-31 19:23:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 19:23:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 60 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 162 [2022-01-31 19:23:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:13,936 INFO L225 Difference]: With dead ends: 172 [2022-01-31 19:23:13,936 INFO L226 Difference]: Without dead ends: 148 [2022-01-31 19:23:13,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 19:23:13,937 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 135 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:13,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 57 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-31 19:23:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2022-01-31 19:23:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2022-01-31 19:23:13,960 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 162 [2022-01-31 19:23:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:13,960 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2022-01-31 19:23:13,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 60 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2022-01-31 19:23:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-31 19:23:13,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:13,961 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:13,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 19:23:13,961 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1471771604, now seen corresponding path program 58 times [2022-01-31 19:23:13,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:13,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986085577] [2022-01-31 19:23:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:13,963 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:13,963 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:13,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:13,981 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 19:23:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:23:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 19:23:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:15,128 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:15,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986085577] [2022-01-31 19:23:15,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [986085577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:15,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:15,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 19:23:15,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250276840] [2022-01-31 19:23:15,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:15,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 19:23:15,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 19:23:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:23:15,130 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 62 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 61 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:16,577 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2022-01-31 19:23:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 19:23:16,577 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 61 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2022-01-31 19:23:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:16,578 INFO L225 Difference]: With dead ends: 174 [2022-01-31 19:23:16,578 INFO L226 Difference]: Without dead ends: 150 [2022-01-31 19:23:16,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 19:23:16,579 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 137 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:16,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 52 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-31 19:23:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-01-31 19:23:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 141 states have (on average 1.0212765957446808) internal successors, (144), 141 states have internal predecessors, (144), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2022-01-31 19:23:16,604 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 164 [2022-01-31 19:23:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:16,604 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2022-01-31 19:23:16,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 61 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2022-01-31 19:23:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-31 19:23:16,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:16,605 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:16,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 19:23:16,605 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash -234350962, now seen corresponding path program 59 times [2022-01-31 19:23:16,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374459276] [2022-01-31 19:23:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:16,606 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:16,606 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:16,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:16,609 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 19:23:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 19:23:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 19:23:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:17,776 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:17,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374459276] [2022-01-31 19:23:17,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1374459276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:17,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:17,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 19:23:17,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129208407] [2022-01-31 19:23:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:17,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 19:23:17,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:17,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 19:23:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 19:23:17,778 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 62 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:19,237 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2022-01-31 19:23:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 19:23:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 62 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 166 [2022-01-31 19:23:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:19,239 INFO L225 Difference]: With dead ends: 176 [2022-01-31 19:23:19,239 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 19:23:19,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 19:23:19,240 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:19,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 47 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 19:23:19,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-01-31 19:23:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 143 states have (on average 1.020979020979021) internal successors, (146), 143 states have internal predecessors, (146), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2022-01-31 19:23:19,264 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 166 [2022-01-31 19:23:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:19,264 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2022-01-31 19:23:19,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 62 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2022-01-31 19:23:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-31 19:23:19,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:19,265 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:19,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 19:23:19,265 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:19,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash -779054992, now seen corresponding path program 60 times [2022-01-31 19:23:19,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:19,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384433149] [2022-01-31 19:23:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:19,266 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:19,266 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:19,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:19,269 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 19:23:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:23:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:23:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:20,444 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384433149] [2022-01-31 19:23:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384433149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:20,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:20,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 19:23:20,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308868845] [2022-01-31 19:23:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:20,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 19:23:20,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 19:23:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:23:20,445 INFO L87 Difference]: Start difference. First operand 151 states and 155 transitions. Second operand has 64 states, 64 states have (on average 2.171875) internal successors, (139), 63 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:21,956 INFO L93 Difference]: Finished difference Result 178 states and 186 transitions. [2022-01-31 19:23:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 19:23:21,957 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.171875) internal successors, (139), 63 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 168 [2022-01-31 19:23:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:21,958 INFO L225 Difference]: With dead ends: 178 [2022-01-31 19:23:21,958 INFO L226 Difference]: Without dead ends: 154 [2022-01-31 19:23:21,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 19:23:21,959 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 141 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:21,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 47 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-31 19:23:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-01-31 19:23:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-01-31 19:23:21,984 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 168 [2022-01-31 19:23:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:21,985 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-01-31 19:23:21,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.171875) internal successors, (139), 63 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-01-31 19:23:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-31 19:23:21,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:21,985 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:21,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 19:23:21,985 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:21,986 INFO L85 PathProgramCache]: Analyzing trace with hash -253617710, now seen corresponding path program 61 times [2022-01-31 19:23:21,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:21,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013667827] [2022-01-31 19:23:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:21,988 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:21,988 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:21,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:21,991 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 19:23:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 19:23:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:23:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:23,216 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013667827] [2022-01-31 19:23:23,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013667827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:23,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:23,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 19:23:23,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612711928] [2022-01-31 19:23:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:23,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 19:23:23,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 19:23:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 19:23:23,217 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 65 states, 65 states have (on average 2.169230769230769) internal successors, (141), 64 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:24,795 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2022-01-31 19:23:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 19:23:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.169230769230769) internal successors, (141), 64 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 170 [2022-01-31 19:23:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:24,796 INFO L225 Difference]: With dead ends: 180 [2022-01-31 19:23:24,796 INFO L226 Difference]: Without dead ends: 156 [2022-01-31 19:23:24,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 19:23:24,797 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 143 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:24,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 62 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-31 19:23:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2022-01-31 19:23:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2022-01-31 19:23:24,824 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 170 [2022-01-31 19:23:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:24,824 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2022-01-31 19:23:24,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.169230769230769) internal successors, (141), 64 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2022-01-31 19:23:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-31 19:23:24,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:24,824 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:24,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 19:23:24,825 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2114530636, now seen corresponding path program 62 times [2022-01-31 19:23:24,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:24,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958470736] [2022-01-31 19:23:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:24,826 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:24,826 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:24,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:24,829 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 19:23:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:26,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:23:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 19:23:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:26,099 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958470736] [2022-01-31 19:23:26,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958470736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:26,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:26,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 19:23:26,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309422582] [2022-01-31 19:23:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:26,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 19:23:26,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 19:23:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:23:26,101 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 66 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 65 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:27,729 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2022-01-31 19:23:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 19:23:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 65 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-01-31 19:23:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:27,730 INFO L225 Difference]: With dead ends: 182 [2022-01-31 19:23:27,730 INFO L226 Difference]: Without dead ends: 158 [2022-01-31 19:23:27,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 19:23:27,731 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 145 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:27,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 57 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-31 19:23:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2022-01-31 19:23:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.0201342281879195) internal successors, (152), 149 states have internal predecessors, (152), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2022-01-31 19:23:27,763 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 172 [2022-01-31 19:23:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:27,764 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2022-01-31 19:23:27,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.1666666666666665) internal successors, (143), 65 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2022-01-31 19:23:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 19:23:27,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:27,764 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:27,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 19:23:27,765 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash 549509910, now seen corresponding path program 63 times [2022-01-31 19:23:27,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149716815] [2022-01-31 19:23:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:27,767 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:27,767 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:27,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:27,770 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 19:23:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 19:23:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 19:23:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:29,073 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149716815] [2022-01-31 19:23:29,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1149716815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:29,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:29,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 19:23:29,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215021104] [2022-01-31 19:23:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:29,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 19:23:29,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 19:23:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 19:23:29,075 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 66 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:30,720 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2022-01-31 19:23:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 19:23:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 66 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-01-31 19:23:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:30,721 INFO L225 Difference]: With dead ends: 184 [2022-01-31 19:23:30,721 INFO L226 Difference]: Without dead ends: 160 [2022-01-31 19:23:30,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 19:23:30,722 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 147 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:30,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 47 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-31 19:23:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2022-01-31 19:23:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 151 states have internal predecessors, (154), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2022-01-31 19:23:30,757 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 174 [2022-01-31 19:23:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:30,757 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2022-01-31 19:23:30,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.1641791044776117) internal successors, (145), 66 states have internal predecessors, (145), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2022-01-31 19:23:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-31 19:23:30,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:30,768 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:30,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 19:23:30,768 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 891966200, now seen corresponding path program 64 times [2022-01-31 19:23:30,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:30,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508348898] [2022-01-31 19:23:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:30,769 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:30,769 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:30,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:30,772 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 19:23:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:23:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:23:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:32,097 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:32,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508348898] [2022-01-31 19:23:32,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1508348898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:32,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:32,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 19:23:32,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666263485] [2022-01-31 19:23:32,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:32,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 19:23:32,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 19:23:32,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:23:32,099 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 68 states, 68 states have (on average 2.161764705882353) internal successors, (147), 67 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:33,786 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2022-01-31 19:23:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 19:23:33,786 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.161764705882353) internal successors, (147), 67 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-01-31 19:23:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:33,787 INFO L225 Difference]: With dead ends: 186 [2022-01-31 19:23:33,787 INFO L226 Difference]: Without dead ends: 162 [2022-01-31 19:23:33,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 19:23:33,788 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 149 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:33,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 72 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-31 19:23:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2022-01-31 19:23:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 153 states have (on average 1.0196078431372548) internal successors, (156), 153 states have internal predecessors, (156), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2022-01-31 19:23:33,817 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 176 [2022-01-31 19:23:33,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:33,817 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2022-01-31 19:23:33,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.161764705882353) internal successors, (147), 67 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2022-01-31 19:23:33,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-31 19:23:33,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:33,818 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:33,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 19:23:33,818 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:33,818 INFO L85 PathProgramCache]: Analyzing trace with hash -720020902, now seen corresponding path program 65 times [2022-01-31 19:23:33,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:33,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455767839] [2022-01-31 19:23:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:33,819 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:33,820 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:33,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:33,823 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 19:23:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 19:23:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:23:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:35,181 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:35,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455767839] [2022-01-31 19:23:35,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [455767839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:35,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:35,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 19:23:35,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288514998] [2022-01-31 19:23:35,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:35,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 19:23:35,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 19:23:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 19:23:35,183 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 68 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:36,881 INFO L93 Difference]: Finished difference Result 188 states and 196 transitions. [2022-01-31 19:23:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 19:23:36,881 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 68 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 178 [2022-01-31 19:23:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:36,882 INFO L225 Difference]: With dead ends: 188 [2022-01-31 19:23:36,882 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 19:23:36,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 19:23:36,883 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 151 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:36,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 37 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 19:23:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2022-01-31 19:23:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 155 states have internal predecessors, (158), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2022-01-31 19:23:36,913 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 178 [2022-01-31 19:23:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:36,913 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2022-01-31 19:23:36,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 68 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2022-01-31 19:23:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-31 19:23:36,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:36,914 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:36,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 19:23:36,914 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 643567932, now seen corresponding path program 66 times [2022-01-31 19:23:36,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627911647] [2022-01-31 19:23:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:36,916 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:36,917 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:36,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:36,920 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 19:23:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:23:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 19:23:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:38,393 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:38,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627911647] [2022-01-31 19:23:38,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [627911647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:38,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:38,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 19:23:38,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683860194] [2022-01-31 19:23:38,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:38,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 19:23:38,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:38,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 19:23:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 19:23:38,395 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand has 70 states, 70 states have (on average 2.157142857142857) internal successors, (151), 69 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:40,148 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2022-01-31 19:23:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 19:23:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.157142857142857) internal successors, (151), 69 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-01-31 19:23:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:40,150 INFO L225 Difference]: With dead ends: 190 [2022-01-31 19:23:40,150 INFO L226 Difference]: Without dead ends: 166 [2022-01-31 19:23:40,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 19:23:40,152 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 153 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:40,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 37 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-01-31 19:23:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2022-01-31 19:23:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 157 states have (on average 1.019108280254777) internal successors, (160), 157 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2022-01-31 19:23:40,196 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 180 [2022-01-31 19:23:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:40,196 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2022-01-31 19:23:40,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.157142857142857) internal successors, (151), 69 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2022-01-31 19:23:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 19:23:40,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:40,197 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:40,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 19:23:40,197 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1087412126, now seen corresponding path program 67 times [2022-01-31 19:23:40,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:40,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252635673] [2022-01-31 19:23:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:40,199 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:40,199 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:40,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:40,202 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 19:23:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 19:23:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 19:23:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:41,643 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:41,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252635673] [2022-01-31 19:23:41,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252635673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:41,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:41,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 19:23:41,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403632184] [2022-01-31 19:23:41,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:41,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 19:23:41,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 19:23:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 19:23:41,645 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand has 71 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 70 states have internal predecessors, (153), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:43,459 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2022-01-31 19:23:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 19:23:43,460 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 70 states have internal predecessors, (153), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 182 [2022-01-31 19:23:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:43,460 INFO L225 Difference]: With dead ends: 192 [2022-01-31 19:23:43,460 INFO L226 Difference]: Without dead ends: 168 [2022-01-31 19:23:43,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 19:23:43,462 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 155 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:43,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 47 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-31 19:23:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-01-31 19:23:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 159 states have (on average 1.0188679245283019) internal successors, (162), 159 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2022-01-31 19:23:43,496 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 182 [2022-01-31 19:23:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:43,497 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2022-01-31 19:23:43,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 70 states have internal predecessors, (153), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2022-01-31 19:23:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-31 19:23:43,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:43,498 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:43,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 19:23:43,498 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1875047040, now seen corresponding path program 68 times [2022-01-31 19:23:43,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:43,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984629513] [2022-01-31 19:23:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:43,500 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:43,500 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:43,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:43,503 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 19:23:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:23:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:23:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:44,965 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:44,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984629513] [2022-01-31 19:23:44,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [984629513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:44,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:44,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 19:23:44,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647988903] [2022-01-31 19:23:44,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:44,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 19:23:44,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:44,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 19:23:44,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 19:23:44,967 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 72 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 71 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:46,804 INFO L93 Difference]: Finished difference Result 194 states and 202 transitions. [2022-01-31 19:23:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 19:23:46,805 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 71 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 184 [2022-01-31 19:23:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:46,805 INFO L225 Difference]: With dead ends: 194 [2022-01-31 19:23:46,805 INFO L226 Difference]: Without dead ends: 170 [2022-01-31 19:23:46,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 19:23:46,807 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 157 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:46,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 47 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:23:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-31 19:23:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2022-01-31 19:23:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 161 states have (on average 1.0186335403726707) internal successors, (164), 161 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 173 transitions. [2022-01-31 19:23:46,840 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 173 transitions. Word has length 184 [2022-01-31 19:23:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 173 transitions. [2022-01-31 19:23:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 71 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 173 transitions. [2022-01-31 19:23:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-31 19:23:46,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:46,841 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:46,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 19:23:46,841 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1234988318, now seen corresponding path program 69 times [2022-01-31 19:23:46,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:46,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668628059] [2022-01-31 19:23:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:46,842 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:46,842 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:46,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:46,845 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:48,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 19:23:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:48,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 19:23:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:48,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:23:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:48,361 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:48,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668628059] [2022-01-31 19:23:48,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [668628059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:48,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:48,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 19:23:48,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483316323] [2022-01-31 19:23:48,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:48,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 19:23:48,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 19:23:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 19:23:48,363 INFO L87 Difference]: Start difference. First operand 169 states and 173 transitions. Second operand has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:50,274 INFO L93 Difference]: Finished difference Result 196 states and 204 transitions. [2022-01-31 19:23:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 19:23:50,274 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 186 [2022-01-31 19:23:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:50,275 INFO L225 Difference]: With dead ends: 196 [2022-01-31 19:23:50,275 INFO L226 Difference]: Without dead ends: 172 [2022-01-31 19:23:50,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 19:23:50,276 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 159 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:50,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 72 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-31 19:23:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2022-01-31 19:23:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2022-01-31 19:23:50,309 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 186 [2022-01-31 19:23:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:50,309 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2022-01-31 19:23:50,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 72 states have internal predecessors, (157), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2022-01-31 19:23:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-31 19:23:50,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:50,310 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:50,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 19:23:50,310 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:50,310 INFO L85 PathProgramCache]: Analyzing trace with hash -318879804, now seen corresponding path program 70 times [2022-01-31 19:23:50,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517637810] [2022-01-31 19:23:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:50,312 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:50,312 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:50,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:50,315 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 19:23:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:23:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 19:23:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:51,941 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:51,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517637810] [2022-01-31 19:23:51,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [517637810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:51,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:51,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 19:23:51,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071823181] [2022-01-31 19:23:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:51,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 19:23:51,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 19:23:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:23:51,943 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:53,961 INFO L93 Difference]: Finished difference Result 198 states and 206 transitions. [2022-01-31 19:23:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 19:23:53,961 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 188 [2022-01-31 19:23:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:53,962 INFO L225 Difference]: With dead ends: 198 [2022-01-31 19:23:53,962 INFO L226 Difference]: Without dead ends: 174 [2022-01-31 19:23:53,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 19:23:53,965 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 161 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:53,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 57 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-31 19:23:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2022-01-31 19:23:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2022-01-31 19:23:53,999 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 188 [2022-01-31 19:23:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:53,999 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2022-01-31 19:23:53,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 73 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2022-01-31 19:23:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 19:23:54,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:54,000 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:54,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 19:23:54,000 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:54,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -406893530, now seen corresponding path program 71 times [2022-01-31 19:23:54,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:54,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57466078] [2022-01-31 19:23:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:54,001 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:54,002 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:54,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:54,008 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 19:23:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:55,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 19:23:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 19:23:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:55,619 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:55,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57466078] [2022-01-31 19:23:55,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [57466078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:55,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:55,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 19:23:55,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344349016] [2022-01-31 19:23:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:55,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 19:23:55,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 19:23:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 19:23:55,621 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand has 75 states, 75 states have (on average 2.1466666666666665) internal successors, (161), 74 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:57,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:23:57,667 INFO L93 Difference]: Finished difference Result 200 states and 208 transitions. [2022-01-31 19:23:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 19:23:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.1466666666666665) internal successors, (161), 74 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 190 [2022-01-31 19:23:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:23:57,668 INFO L225 Difference]: With dead ends: 200 [2022-01-31 19:23:57,668 INFO L226 Difference]: Without dead ends: 176 [2022-01-31 19:23:57,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 19:23:57,669 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 163 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:23:57,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 47 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:23:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-31 19:23:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-01-31 19:23:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 167 states have internal predecessors, (170), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:23:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2022-01-31 19:23:57,702 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 190 [2022-01-31 19:23:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:23:57,703 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2022-01-31 19:23:57,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.1466666666666665) internal successors, (161), 74 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:23:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2022-01-31 19:23:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-31 19:23:57,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:23:57,703 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:23:57,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 19:23:57,704 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:23:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:23:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash 911261704, now seen corresponding path program 72 times [2022-01-31 19:23:57,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:23:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829408796] [2022-01-31 19:23:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:23:57,705 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:23:57,705 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:23:57,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:23:57,708 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:23:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:23:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 19:23:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:23:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:23:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:23:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:23:59,506 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:23:59,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829408796] [2022-01-31 19:23:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [829408796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:23:59,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:23:59,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 19:23:59,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722648494] [2022-01-31 19:23:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:23:59,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 19:23:59,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:23:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 19:23:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:23:59,508 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 76 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 75 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:01,538 INFO L93 Difference]: Finished difference Result 202 states and 210 transitions. [2022-01-31 19:24:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 19:24:01,539 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 75 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 192 [2022-01-31 19:24:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:01,540 INFO L225 Difference]: With dead ends: 202 [2022-01-31 19:24:01,540 INFO L226 Difference]: Without dead ends: 178 [2022-01-31 19:24:01,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 19:24:01,542 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 165 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:01,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 52 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-31 19:24:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2022-01-31 19:24:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 169 states have (on average 1.017751479289941) internal successors, (172), 169 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2022-01-31 19:24:01,595 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 192 [2022-01-31 19:24:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:01,595 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2022-01-31 19:24:01,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.1447368421052633) internal successors, (163), 75 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2022-01-31 19:24:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-31 19:24:01,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:01,596 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:01,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 19:24:01,596 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 643089258, now seen corresponding path program 73 times [2022-01-31 19:24:01,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:01,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359230505] [2022-01-31 19:24:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:01,598 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:01,598 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:01,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:01,602 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 19:24:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 19:24:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:24:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:03,297 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:03,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359230505] [2022-01-31 19:24:03,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1359230505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:03,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:03,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 19:24:03,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38605759] [2022-01-31 19:24:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:03,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 19:24:03,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 19:24:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:24:03,304 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 77 states, 77 states have (on average 2.142857142857143) internal successors, (165), 76 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:05,404 INFO L93 Difference]: Finished difference Result 204 states and 212 transitions. [2022-01-31 19:24:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 19:24:05,405 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.142857142857143) internal successors, (165), 76 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 194 [2022-01-31 19:24:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:05,405 INFO L225 Difference]: With dead ends: 204 [2022-01-31 19:24:05,405 INFO L226 Difference]: Without dead ends: 180 [2022-01-31 19:24:05,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 19:24:05,407 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 167 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:05,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 52 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-01-31 19:24:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2022-01-31 19:24:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 171 states have (on average 1.0175438596491229) internal successors, (174), 171 states have internal predecessors, (174), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2022-01-31 19:24:05,449 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 194 [2022-01-31 19:24:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:05,449 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2022-01-31 19:24:05,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.142857142857143) internal successors, (165), 76 states have internal predecessors, (165), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2022-01-31 19:24:05,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-31 19:24:05,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:05,450 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:05,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 19:24:05,450 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash 627406412, now seen corresponding path program 74 times [2022-01-31 19:24:05,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:05,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485535768] [2022-01-31 19:24:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:05,451 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:05,452 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:05,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:05,455 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 19:24:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:24:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 19:24:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:07,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485535768] [2022-01-31 19:24:07,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [485535768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:07,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:07,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 19:24:07,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396068791] [2022-01-31 19:24:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:07,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 19:24:07,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:07,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 19:24:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:24:07,170 INFO L87 Difference]: Start difference. First operand 179 states and 183 transitions. Second operand has 78 states, 78 states have (on average 2.141025641025641) internal successors, (167), 77 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:09,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:09,285 INFO L93 Difference]: Finished difference Result 206 states and 214 transitions. [2022-01-31 19:24:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 19:24:09,286 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.141025641025641) internal successors, (167), 77 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196 [2022-01-31 19:24:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:09,286 INFO L225 Difference]: With dead ends: 206 [2022-01-31 19:24:09,286 INFO L226 Difference]: Without dead ends: 182 [2022-01-31 19:24:09,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 19:24:09,288 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 169 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:09,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 47 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-31 19:24:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2022-01-31 19:24:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 173 states have internal predecessors, (176), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2022-01-31 19:24:09,324 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 196 [2022-01-31 19:24:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:09,324 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2022-01-31 19:24:09,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.141025641025641) internal successors, (167), 77 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2022-01-31 19:24:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-31 19:24:09,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:09,325 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:09,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 19:24:09,325 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1558906706, now seen corresponding path program 75 times [2022-01-31 19:24:09,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:09,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534641019] [2022-01-31 19:24:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:09,327 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:09,327 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:09,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:09,330 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 19:24:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 19:24:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 19:24:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:11,078 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:11,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534641019] [2022-01-31 19:24:11,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1534641019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:11,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:11,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 19:24:11,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726079235] [2022-01-31 19:24:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:11,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 19:24:11,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 19:24:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 19:24:11,081 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 79 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 78 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:13,298 INFO L93 Difference]: Finished difference Result 208 states and 216 transitions. [2022-01-31 19:24:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 19:24:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 78 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 198 [2022-01-31 19:24:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:13,299 INFO L225 Difference]: With dead ends: 208 [2022-01-31 19:24:13,299 INFO L226 Difference]: Without dead ends: 184 [2022-01-31 19:24:13,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 19:24:13,301 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 171 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:13,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 37 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-01-31 19:24:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-01-31 19:24:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 175 states have (on average 1.0171428571428571) internal successors, (178), 175 states have internal predecessors, (178), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2022-01-31 19:24:13,338 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 198 [2022-01-31 19:24:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:13,338 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2022-01-31 19:24:13,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.1392405063291138) internal successors, (169), 78 states have internal predecessors, (169), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2022-01-31 19:24:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-31 19:24:13,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:13,339 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:13,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 19:24:13,339 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1928161936, now seen corresponding path program 76 times [2022-01-31 19:24:13,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:13,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692476122] [2022-01-31 19:24:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:13,341 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:13,341 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:13,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:13,345 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 19:24:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:24:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:24:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:15,180 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:15,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692476122] [2022-01-31 19:24:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692476122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:15,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 19:24:15,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652445402] [2022-01-31 19:24:15,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:15,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 19:24:15,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 19:24:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:24:15,182 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 80 states, 80 states have (on average 2.1375) internal successors, (171), 79 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:17,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:17,486 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2022-01-31 19:24:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 19:24:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.1375) internal successors, (171), 79 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 200 [2022-01-31 19:24:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:17,487 INFO L225 Difference]: With dead ends: 210 [2022-01-31 19:24:17,487 INFO L226 Difference]: Without dead ends: 186 [2022-01-31 19:24:17,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 19:24:17,489 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:17,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 57 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-31 19:24:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-01-31 19:24:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 177 states have (on average 1.0169491525423728) internal successors, (180), 177 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2022-01-31 19:24:17,528 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 200 [2022-01-31 19:24:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:17,528 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2022-01-31 19:24:17,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.1375) internal successors, (171), 79 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2022-01-31 19:24:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-31 19:24:17,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:17,529 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:17,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 19:24:17,529 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1368331278, now seen corresponding path program 77 times [2022-01-31 19:24:17,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:17,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803520339] [2022-01-31 19:24:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:17,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:17,531 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:17,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:17,534 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 19:24:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 19:24:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:24:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:19,356 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:19,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803520339] [2022-01-31 19:24:19,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1803520339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:19,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:19,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 19:24:19,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874567471] [2022-01-31 19:24:19,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:19,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 19:24:19,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:19,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 19:24:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 19:24:19,358 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 80 states have internal predecessors, (173), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:21,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:21,651 INFO L93 Difference]: Finished difference Result 212 states and 220 transitions. [2022-01-31 19:24:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 19:24:21,652 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 80 states have internal predecessors, (173), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 202 [2022-01-31 19:24:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:21,652 INFO L225 Difference]: With dead ends: 212 [2022-01-31 19:24:21,653 INFO L226 Difference]: Without dead ends: 188 [2022-01-31 19:24:21,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 19:24:21,654 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 175 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:21,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 47 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-31 19:24:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2022-01-31 19:24:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 179 states have (on average 1.0167597765363128) internal successors, (182), 179 states have internal predecessors, (182), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2022-01-31 19:24:21,700 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 202 [2022-01-31 19:24:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:21,700 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2022-01-31 19:24:21,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 80 states have internal predecessors, (173), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2022-01-31 19:24:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 19:24:21,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:21,701 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:21,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 19:24:21,701 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 387554516, now seen corresponding path program 78 times [2022-01-31 19:24:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434272613] [2022-01-31 19:24:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:21,702 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:21,702 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:21,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:21,706 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 19:24:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:24:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 19:24:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:23,624 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:23,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434272613] [2022-01-31 19:24:23,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1434272613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:23,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:23,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 19:24:23,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902542580] [2022-01-31 19:24:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:23,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 19:24:23,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 19:24:23,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 19:24:23,626 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 82 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 81 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:26,030 INFO L93 Difference]: Finished difference Result 214 states and 222 transitions. [2022-01-31 19:24:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 19:24:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 81 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 204 [2022-01-31 19:24:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:26,031 INFO L225 Difference]: With dead ends: 214 [2022-01-31 19:24:26,031 INFO L226 Difference]: Without dead ends: 190 [2022-01-31 19:24:26,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 19:24:26,033 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 177 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:26,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 67 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-31 19:24:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2022-01-31 19:24:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.0165745856353592) internal successors, (184), 181 states have internal predecessors, (184), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2022-01-31 19:24:26,078 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 204 [2022-01-31 19:24:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:26,079 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2022-01-31 19:24:26,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 81 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2022-01-31 19:24:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-31 19:24:26,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:26,080 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:26,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 19:24:26,080 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:26,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:26,080 INFO L85 PathProgramCache]: Analyzing trace with hash -128344778, now seen corresponding path program 79 times [2022-01-31 19:24:26,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:26,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240513411] [2022-01-31 19:24:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:26,082 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:26,082 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:26,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:26,086 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 19:24:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 19:24:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 19:24:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:28,077 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:28,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240513411] [2022-01-31 19:24:28,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [240513411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:28,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:28,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 19:24:28,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164437942] [2022-01-31 19:24:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:28,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 19:24:28,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 19:24:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:24:28,078 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand has 83 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 82 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:30,529 INFO L93 Difference]: Finished difference Result 216 states and 224 transitions. [2022-01-31 19:24:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 19:24:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 82 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 206 [2022-01-31 19:24:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:30,530 INFO L225 Difference]: With dead ends: 216 [2022-01-31 19:24:30,530 INFO L226 Difference]: Without dead ends: 192 [2022-01-31 19:24:30,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 19:24:30,532 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 179 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:30,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 52 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-01-31 19:24:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2022-01-31 19:24:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 183 states have (on average 1.0163934426229508) internal successors, (186), 183 states have internal predecessors, (186), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2022-01-31 19:24:30,583 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 206 [2022-01-31 19:24:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:30,583 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2022-01-31 19:24:30,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 82 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2022-01-31 19:24:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-31 19:24:30,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:30,584 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:30,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 19:24:30,585 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1986327272, now seen corresponding path program 80 times [2022-01-31 19:24:30,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699090665] [2022-01-31 19:24:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:30,586 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:30,586 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:30,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:30,590 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:32,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 19:24:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:24:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:24:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:32,571 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699090665] [2022-01-31 19:24:32,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1699090665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:32,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:32,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 19:24:32,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999531576] [2022-01-31 19:24:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:32,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 19:24:32,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 19:24:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:24:32,573 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand has 84 states, 84 states have (on average 2.130952380952381) internal successors, (179), 83 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:35,109 INFO L93 Difference]: Finished difference Result 218 states and 226 transitions. [2022-01-31 19:24:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 19:24:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.130952380952381) internal successors, (179), 83 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 208 [2022-01-31 19:24:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:35,110 INFO L225 Difference]: With dead ends: 218 [2022-01-31 19:24:35,110 INFO L226 Difference]: Without dead ends: 194 [2022-01-31 19:24:35,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 19:24:35,111 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 181 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:35,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 57 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-31 19:24:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2022-01-31 19:24:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 185 states have (on average 1.0162162162162163) internal successors, (188), 185 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 197 transitions. [2022-01-31 19:24:35,159 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 197 transitions. Word has length 208 [2022-01-31 19:24:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:35,159 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 197 transitions. [2022-01-31 19:24:35,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.130952380952381) internal successors, (179), 83 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 197 transitions. [2022-01-31 19:24:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-31 19:24:35,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:35,160 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:35,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 19:24:35,161 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash -801108870, now seen corresponding path program 81 times [2022-01-31 19:24:35,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:35,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246210019] [2022-01-31 19:24:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:35,162 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:35,162 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:35,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:35,166 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:37,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 19:24:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:37,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 19:24:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:24:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:37,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:37,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246210019] [2022-01-31 19:24:37,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1246210019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:37,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:37,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 19:24:37,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311477190] [2022-01-31 19:24:37,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:37,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 19:24:37,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 19:24:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 19:24:37,194 INFO L87 Difference]: Start difference. First operand 193 states and 197 transitions. Second operand has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:39,732 INFO L93 Difference]: Finished difference Result 220 states and 228 transitions. [2022-01-31 19:24:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 19:24:39,733 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 210 [2022-01-31 19:24:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:39,733 INFO L225 Difference]: With dead ends: 220 [2022-01-31 19:24:39,733 INFO L226 Difference]: Without dead ends: 196 [2022-01-31 19:24:39,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 19:24:39,735 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 183 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:39,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 47 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-31 19:24:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-01-31 19:24:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.0160427807486632) internal successors, (190), 187 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 199 transitions. [2022-01-31 19:24:39,779 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 199 transitions. Word has length 210 [2022-01-31 19:24:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:39,779 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 199 transitions. [2022-01-31 19:24:39,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 199 transitions. [2022-01-31 19:24:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-31 19:24:39,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:39,780 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:39,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 19:24:39,781 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:39,781 INFO L85 PathProgramCache]: Analyzing trace with hash 27442012, now seen corresponding path program 82 times [2022-01-31 19:24:39,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:39,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005312573] [2022-01-31 19:24:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:39,782 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:39,782 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:39,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:39,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 19:24:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:24:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 19:24:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:41,889 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:41,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005312573] [2022-01-31 19:24:41,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1005312573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:41,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:41,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 19:24:41,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142504431] [2022-01-31 19:24:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:41,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 19:24:41,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 19:24:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:24:41,891 INFO L87 Difference]: Start difference. First operand 195 states and 199 transitions. Second operand has 86 states, 86 states have (on average 2.127906976744186) internal successors, (183), 85 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:44,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:44,491 INFO L93 Difference]: Finished difference Result 222 states and 230 transitions. [2022-01-31 19:24:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 19:24:44,492 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.127906976744186) internal successors, (183), 85 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 212 [2022-01-31 19:24:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:44,492 INFO L225 Difference]: With dead ends: 222 [2022-01-31 19:24:44,492 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 19:24:44,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 19:24:44,494 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 185 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:44,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 62 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:44,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 19:24:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2022-01-31 19:24:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 189 states have (on average 1.0158730158730158) internal successors, (192), 189 states have internal predecessors, (192), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2022-01-31 19:24:44,555 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 212 [2022-01-31 19:24:44,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:44,555 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 201 transitions. [2022-01-31 19:24:44,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.127906976744186) internal successors, (183), 85 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 201 transitions. [2022-01-31 19:24:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-31 19:24:44,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:44,556 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:44,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 19:24:44,556 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1695889854, now seen corresponding path program 83 times [2022-01-31 19:24:44,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:44,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711698830] [2022-01-31 19:24:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:44,559 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:44,559 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:44,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:44,563 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 19:24:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 19:24:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:46,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 19:24:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:46,720 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:46,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711698830] [2022-01-31 19:24:46,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [711698830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:46,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:46,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 19:24:46,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579121604] [2022-01-31 19:24:46,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:46,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 19:24:46,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:46,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 19:24:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 19:24:46,722 INFO L87 Difference]: Start difference. First operand 197 states and 201 transitions. Second operand has 87 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 86 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:49,407 INFO L93 Difference]: Finished difference Result 224 states and 232 transitions. [2022-01-31 19:24:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 19:24:49,408 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 86 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 214 [2022-01-31 19:24:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:49,409 INFO L225 Difference]: With dead ends: 224 [2022-01-31 19:24:49,409 INFO L226 Difference]: Without dead ends: 200 [2022-01-31 19:24:49,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 19:24:49,410 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 187 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:49,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 47 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-31 19:24:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2022-01-31 19:24:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 191 states have (on average 1.0157068062827226) internal successors, (194), 191 states have internal predecessors, (194), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2022-01-31 19:24:49,455 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 214 [2022-01-31 19:24:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:49,456 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2022-01-31 19:24:49,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 86 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2022-01-31 19:24:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-31 19:24:49,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:49,456 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:49,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 19:24:49,457 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1243502688, now seen corresponding path program 84 times [2022-01-31 19:24:49,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:49,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721431241] [2022-01-31 19:24:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:49,458 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:49,458 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:49,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:49,462 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 19:24:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:24:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:24:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:51,691 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:51,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721431241] [2022-01-31 19:24:51,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1721431241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:51,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:51,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 19:24:51,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317307924] [2022-01-31 19:24:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:51,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 19:24:51,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:51,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 19:24:51,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 19:24:51,693 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand has 88 states, 88 states have (on average 2.125) internal successors, (187), 87 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:54,435 INFO L93 Difference]: Finished difference Result 226 states and 234 transitions. [2022-01-31 19:24:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 19:24:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.125) internal successors, (187), 87 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 216 [2022-01-31 19:24:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:54,436 INFO L225 Difference]: With dead ends: 226 [2022-01-31 19:24:54,436 INFO L226 Difference]: Without dead ends: 202 [2022-01-31 19:24:54,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 19:24:54,438 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 189 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:54,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 57 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-31 19:24:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-01-31 19:24:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 193 states have (on average 1.0155440414507773) internal successors, (196), 193 states have internal predecessors, (196), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2022-01-31 19:24:54,493 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 216 [2022-01-31 19:24:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:54,493 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2022-01-31 19:24:54,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.125) internal successors, (187), 87 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2022-01-31 19:24:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-31 19:24:54,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:54,494 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:54,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 19:24:54,494 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:54,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:54,494 INFO L85 PathProgramCache]: Analyzing trace with hash 88745218, now seen corresponding path program 85 times [2022-01-31 19:24:54,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:54,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215406332] [2022-01-31 19:24:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:54,495 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:54,495 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:54,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:54,499 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:24:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 19:24:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 19:24:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:24:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:24:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:24:56,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:24:56,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215406332] [2022-01-31 19:24:56,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [215406332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:24:56,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:24:56,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 19:24:56,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915036015] [2022-01-31 19:24:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:24:56,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 19:24:56,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:24:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 19:24:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 19:24:56,685 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand has 89 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 88 states have internal predecessors, (189), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:24:59,444 INFO L93 Difference]: Finished difference Result 228 states and 236 transitions. [2022-01-31 19:24:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 19:24:59,444 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 88 states have internal predecessors, (189), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 218 [2022-01-31 19:24:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:24:59,445 INFO L225 Difference]: With dead ends: 228 [2022-01-31 19:24:59,445 INFO L226 Difference]: Without dead ends: 204 [2022-01-31 19:24:59,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 19:24:59,447 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 191 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:24:59,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 52 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:24:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-31 19:24:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2022-01-31 19:24:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 195 states have internal predecessors, (198), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:24:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 207 transitions. [2022-01-31 19:24:59,498 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 207 transitions. Word has length 218 [2022-01-31 19:24:59,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:24:59,499 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 207 transitions. [2022-01-31 19:24:59,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 88 states have internal predecessors, (189), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:24:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 207 transitions. [2022-01-31 19:24:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-31 19:24:59,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:24:59,500 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:24:59,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 19:24:59,500 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:24:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:24:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash 478728676, now seen corresponding path program 86 times [2022-01-31 19:24:59,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:24:59,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260420827] [2022-01-31 19:24:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:24:59,504 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:24:59,504 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:24:59,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:24:59,508 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:24:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 19:25:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:25:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 19:25:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:01,810 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:01,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260420827] [2022-01-31 19:25:01,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1260420827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:01,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:01,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 19:25:01,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685955369] [2022-01-31 19:25:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:01,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 19:25:01,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 19:25:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 19:25:01,812 INFO L87 Difference]: Start difference. First operand 203 states and 207 transitions. Second operand has 90 states, 90 states have (on average 2.1222222222222222) internal successors, (191), 89 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:04,681 INFO L93 Difference]: Finished difference Result 230 states and 238 transitions. [2022-01-31 19:25:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 19:25:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.1222222222222222) internal successors, (191), 89 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 220 [2022-01-31 19:25:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:04,682 INFO L225 Difference]: With dead ends: 230 [2022-01-31 19:25:04,682 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 19:25:04,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 19:25:04,684 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 193 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:04,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 47 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 19:25:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2022-01-31 19:25:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 1.015228426395939) internal successors, (200), 197 states have internal predecessors, (200), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2022-01-31 19:25:04,754 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 220 [2022-01-31 19:25:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:04,754 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2022-01-31 19:25:04,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.1222222222222222) internal successors, (191), 89 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2022-01-31 19:25:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-31 19:25:04,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:04,756 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:04,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 19:25:04,756 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:04,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1590677062, now seen corresponding path program 87 times [2022-01-31 19:25:04,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:04,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448161003] [2022-01-31 19:25:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:04,758 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:04,758 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:04,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:04,763 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 19:25:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:07,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 19:25:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 19:25:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:07,106 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:07,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448161003] [2022-01-31 19:25:07,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1448161003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:07,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:07,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 19:25:07,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118269910] [2022-01-31 19:25:07,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 19:25:07,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 19:25:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 19:25:07,109 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand has 91 states, 91 states have (on average 2.120879120879121) internal successors, (193), 90 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:09,994 INFO L93 Difference]: Finished difference Result 232 states and 240 transitions. [2022-01-31 19:25:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 19:25:09,994 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.120879120879121) internal successors, (193), 90 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 222 [2022-01-31 19:25:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:09,995 INFO L225 Difference]: With dead ends: 232 [2022-01-31 19:25:09,995 INFO L226 Difference]: Without dead ends: 208 [2022-01-31 19:25:09,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 19:25:09,997 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 195 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:09,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 52 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-31 19:25:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-01-31 19:25:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.015075376884422) internal successors, (202), 199 states have internal predecessors, (202), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 211 transitions. [2022-01-31 19:25:10,064 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 211 transitions. Word has length 222 [2022-01-31 19:25:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:10,065 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 211 transitions. [2022-01-31 19:25:10,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.120879120879121) internal successors, (193), 90 states have internal predecessors, (193), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 211 transitions. [2022-01-31 19:25:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-31 19:25:10,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:10,073 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:10,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 19:25:10,073 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:10,077 INFO L85 PathProgramCache]: Analyzing trace with hash 726219304, now seen corresponding path program 88 times [2022-01-31 19:25:10,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:10,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410032429] [2022-01-31 19:25:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:10,078 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:10,078 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:10,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:10,082 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 19:25:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:25:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:25:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:12,474 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:12,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410032429] [2022-01-31 19:25:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1410032429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:12,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:12,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 19:25:12,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778142695] [2022-01-31 19:25:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:12,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 19:25:12,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 19:25:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 19:25:12,476 INFO L87 Difference]: Start difference. First operand 207 states and 211 transitions. Second operand has 92 states, 92 states have (on average 2.119565217391304) internal successors, (195), 91 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:15,476 INFO L93 Difference]: Finished difference Result 234 states and 242 transitions. [2022-01-31 19:25:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 19:25:15,476 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.119565217391304) internal successors, (195), 91 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 224 [2022-01-31 19:25:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:15,477 INFO L225 Difference]: With dead ends: 234 [2022-01-31 19:25:15,477 INFO L226 Difference]: Without dead ends: 210 [2022-01-31 19:25:15,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 19:25:15,479 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 197 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:15,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 67 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-01-31 19:25:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-01-31 19:25:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 201 states have (on average 1.0149253731343284) internal successors, (204), 201 states have internal predecessors, (204), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2022-01-31 19:25:15,546 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 224 [2022-01-31 19:25:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:15,546 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2022-01-31 19:25:15,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.119565217391304) internal successors, (195), 91 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2022-01-31 19:25:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-31 19:25:15,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:15,547 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:15,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 19:25:15,547 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1088998006, now seen corresponding path program 89 times [2022-01-31 19:25:15,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592971255] [2022-01-31 19:25:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:15,549 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:15,549 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:15,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:15,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 19:25:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 19:25:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:25:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:18,013 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592971255] [2022-01-31 19:25:18,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1592971255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:18,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:18,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 19:25:18,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674957362] [2022-01-31 19:25:18,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:18,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 19:25:18,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 19:25:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 19:25:18,016 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand has 93 states, 93 states have (on average 2.118279569892473) internal successors, (197), 92 states have internal predecessors, (197), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:21,027 INFO L93 Difference]: Finished difference Result 236 states and 244 transitions. [2022-01-31 19:25:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 19:25:21,027 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.118279569892473) internal successors, (197), 92 states have internal predecessors, (197), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 226 [2022-01-31 19:25:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:21,028 INFO L225 Difference]: With dead ends: 236 [2022-01-31 19:25:21,028 INFO L226 Difference]: Without dead ends: 212 [2022-01-31 19:25:21,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 19:25:21,030 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 199 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:21,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 57 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-31 19:25:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-01-31 19:25:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 203 states have internal predecessors, (206), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2022-01-31 19:25:21,094 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 226 [2022-01-31 19:25:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:21,094 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2022-01-31 19:25:21,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.118279569892473) internal successors, (197), 92 states have internal predecessors, (197), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2022-01-31 19:25:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-31 19:25:21,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:21,096 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:21,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 19:25:21,096 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1756110740, now seen corresponding path program 90 times [2022-01-31 19:25:21,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:21,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201558083] [2022-01-31 19:25:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:21,098 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:21,098 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:21,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:21,103 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 19:25:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:25:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 19:25:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:23,590 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:23,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201558083] [2022-01-31 19:25:23,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201558083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:23,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:23,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 19:25:23,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593454217] [2022-01-31 19:25:23,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:23,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 19:25:23,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 19:25:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 19:25:23,593 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand has 94 states, 94 states have (on average 2.117021276595745) internal successors, (199), 93 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:26,703 INFO L93 Difference]: Finished difference Result 238 states and 246 transitions. [2022-01-31 19:25:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 19:25:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.117021276595745) internal successors, (199), 93 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 228 [2022-01-31 19:25:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:26,704 INFO L225 Difference]: With dead ends: 238 [2022-01-31 19:25:26,704 INFO L226 Difference]: Without dead ends: 214 [2022-01-31 19:25:26,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 19:25:26,706 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 201 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:26,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 52 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-01-31 19:25:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-01-31 19:25:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 205 states have (on average 1.0146341463414634) internal successors, (208), 205 states have internal predecessors, (208), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2022-01-31 19:25:26,772 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 228 [2022-01-31 19:25:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:26,772 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2022-01-31 19:25:26,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.117021276595745) internal successors, (199), 93 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2022-01-31 19:25:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-31 19:25:26,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:26,773 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:26,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 19:25:26,773 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1393646286, now seen corresponding path program 91 times [2022-01-31 19:25:26,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:26,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69492634] [2022-01-31 19:25:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:26,775 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:26,775 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:26,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:26,780 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 19:25:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 19:25:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 19:25:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:29,304 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:29,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69492634] [2022-01-31 19:25:29,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [69492634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:29,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:29,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 19:25:29,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875048643] [2022-01-31 19:25:29,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:29,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 19:25:29,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 19:25:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 19:25:29,307 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:32,465 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2022-01-31 19:25:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 19:25:32,465 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 230 [2022-01-31 19:25:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:32,466 INFO L225 Difference]: With dead ends: 240 [2022-01-31 19:25:32,466 INFO L226 Difference]: Without dead ends: 216 [2022-01-31 19:25:32,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 19:25:32,467 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 203 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:32,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 62 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-01-31 19:25:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-01-31 19:25:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 207 states have (on average 1.0144927536231885) internal successors, (210), 207 states have internal predecessors, (210), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2022-01-31 19:25:32,528 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 230 [2022-01-31 19:25:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:32,528 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2022-01-31 19:25:32,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2022-01-31 19:25:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-31 19:25:32,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:32,529 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:32,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 19:25:32,529 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash 358204592, now seen corresponding path program 92 times [2022-01-31 19:25:32,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:32,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038735988] [2022-01-31 19:25:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:32,531 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:32,531 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:32,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:32,536 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 19:25:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:25:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:25:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:35,160 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:35,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038735988] [2022-01-31 19:25:35,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1038735988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:35,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:35,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 19:25:35,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170695] [2022-01-31 19:25:35,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:35,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 19:25:35,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 19:25:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 19:25:35,163 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:38,335 INFO L93 Difference]: Finished difference Result 242 states and 250 transitions. [2022-01-31 19:25:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 19:25:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 232 [2022-01-31 19:25:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:38,336 INFO L225 Difference]: With dead ends: 242 [2022-01-31 19:25:38,336 INFO L226 Difference]: Without dead ends: 218 [2022-01-31 19:25:38,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-01-31 19:25:38,337 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 205 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:38,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 67 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-31 19:25:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-01-31 19:25:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 209 states have (on average 1.014354066985646) internal successors, (212), 209 states have internal predecessors, (212), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2022-01-31 19:25:38,391 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 232 [2022-01-31 19:25:38,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:38,391 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2022-01-31 19:25:38,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:38,392 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2022-01-31 19:25:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 19:25:38,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:38,392 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:38,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 19:25:38,393 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1731149330, now seen corresponding path program 93 times [2022-01-31 19:25:38,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:38,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446342639] [2022-01-31 19:25:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:38,394 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:38,394 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:38,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:38,399 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 19:25:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 19:25:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:25:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:40,990 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:40,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446342639] [2022-01-31 19:25:40,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446342639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:40,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:40,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 19:25:40,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198994778] [2022-01-31 19:25:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:40,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 19:25:40,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 19:25:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 19:25:40,992 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:44,160 INFO L93 Difference]: Finished difference Result 244 states and 252 transitions. [2022-01-31 19:25:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 19:25:44,160 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 234 [2022-01-31 19:25:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:44,161 INFO L225 Difference]: With dead ends: 244 [2022-01-31 19:25:44,161 INFO L226 Difference]: Without dead ends: 220 [2022-01-31 19:25:44,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-01-31 19:25:44,163 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 207 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:44,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 67 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-31 19:25:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-01-31 19:25:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 211 states have (on average 1.014218009478673) internal successors, (214), 211 states have internal predecessors, (214), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 223 transitions. [2022-01-31 19:25:44,226 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 223 transitions. Word has length 234 [2022-01-31 19:25:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:44,226 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 223 transitions. [2022-01-31 19:25:44,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 223 transitions. [2022-01-31 19:25:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-31 19:25:44,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:44,227 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:44,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 19:25:44,227 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1718884620, now seen corresponding path program 94 times [2022-01-31 19:25:44,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:44,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337033858] [2022-01-31 19:25:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:44,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:44,229 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:44,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:44,234 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 19:25:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:25:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:46,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 19:25:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:46,839 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:46,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337033858] [2022-01-31 19:25:46,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [337033858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:46,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:46,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 19:25:46,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180579872] [2022-01-31 19:25:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:46,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 19:25:46,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 19:25:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 19:25:46,842 INFO L87 Difference]: Start difference. First operand 219 states and 223 transitions. Second operand has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:50,047 INFO L93 Difference]: Finished difference Result 246 states and 254 transitions. [2022-01-31 19:25:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 19:25:50,047 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 236 [2022-01-31 19:25:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:50,048 INFO L225 Difference]: With dead ends: 246 [2022-01-31 19:25:50,048 INFO L226 Difference]: Without dead ends: 222 [2022-01-31 19:25:50,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 19:25:50,051 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 209 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:50,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 42 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-01-31 19:25:50,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2022-01-31 19:25:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 213 states have (on average 1.0140845070422535) internal successors, (216), 213 states have internal predecessors, (216), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2022-01-31 19:25:50,114 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 236 [2022-01-31 19:25:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:50,114 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2022-01-31 19:25:50,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2022-01-31 19:25:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-31 19:25:50,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:50,115 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:50,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 19:25:50,115 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1486758058, now seen corresponding path program 95 times [2022-01-31 19:25:50,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121495107] [2022-01-31 19:25:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:50,117 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:50,117 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:50,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:50,122 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 19:25:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 19:25:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 19:25:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:52,851 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:52,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121495107] [2022-01-31 19:25:52,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2121495107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:52,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:52,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 19:25:52,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650000322] [2022-01-31 19:25:52,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:52,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 19:25:52,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:52,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 19:25:52,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:25:52,852 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:25:56,196 INFO L93 Difference]: Finished difference Result 248 states and 256 transitions. [2022-01-31 19:25:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 19:25:56,196 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 238 [2022-01-31 19:25:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:25:56,197 INFO L225 Difference]: With dead ends: 248 [2022-01-31 19:25:56,197 INFO L226 Difference]: Without dead ends: 224 [2022-01-31 19:25:56,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-01-31 19:25:56,199 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 211 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:25:56,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 77 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:25:56,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-31 19:25:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2022-01-31 19:25:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 215 states have (on average 1.013953488372093) internal successors, (218), 215 states have internal predecessors, (218), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:25:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 227 transitions. [2022-01-31 19:25:56,258 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 227 transitions. Word has length 238 [2022-01-31 19:25:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:25:56,258 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 227 transitions. [2022-01-31 19:25:56,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:25:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 227 transitions. [2022-01-31 19:25:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-01-31 19:25:56,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:25:56,259 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:25:56,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 19:25:56,259 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:25:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:25:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1751431368, now seen corresponding path program 96 times [2022-01-31 19:25:56,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:25:56,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95283432] [2022-01-31 19:25:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:25:56,261 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:25:56,261 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:25:56,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:25:56,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:25:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:58,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:25:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 19:25:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:25:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:25:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:25:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:25:58,989 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:25:58,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95283432] [2022-01-31 19:25:58,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [95283432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:25:58,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:25:58,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 19:25:58,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498777704] [2022-01-31 19:25:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:25:58,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 19:25:58,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:25:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 19:25:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 19:25:58,991 INFO L87 Difference]: Start difference. First operand 223 states and 227 transitions. Second operand has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:02,341 INFO L93 Difference]: Finished difference Result 250 states and 258 transitions. [2022-01-31 19:26:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 19:26:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 240 [2022-01-31 19:26:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:02,343 INFO L225 Difference]: With dead ends: 250 [2022-01-31 19:26:02,343 INFO L226 Difference]: Without dead ends: 226 [2022-01-31 19:26:02,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-01-31 19:26:02,345 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 213 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:02,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 52 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-31 19:26:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2022-01-31 19:26:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 217 states have (on average 1.0138248847926268) internal successors, (220), 217 states have internal predecessors, (220), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 229 transitions. [2022-01-31 19:26:02,403 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 229 transitions. Word has length 240 [2022-01-31 19:26:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:02,403 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 229 transitions. [2022-01-31 19:26:02,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2022-01-31 19:26:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-31 19:26:02,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:02,404 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:02,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 19:26:02,405 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1595555482, now seen corresponding path program 97 times [2022-01-31 19:26:02,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:02,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660627203] [2022-01-31 19:26:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:02,406 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:02,406 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:02,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:02,411 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 19:26:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 19:26:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:26:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:05,184 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:05,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660627203] [2022-01-31 19:26:05,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [660627203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:05,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:05,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 19:26:05,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989722449] [2022-01-31 19:26:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:05,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 19:26:05,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 19:26:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 19:26:05,185 INFO L87 Difference]: Start difference. First operand 225 states and 229 transitions. Second operand has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:08,648 INFO L93 Difference]: Finished difference Result 252 states and 260 transitions. [2022-01-31 19:26:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 19:26:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 242 [2022-01-31 19:26:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:08,649 INFO L225 Difference]: With dead ends: 252 [2022-01-31 19:26:08,649 INFO L226 Difference]: Without dead ends: 228 [2022-01-31 19:26:08,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-01-31 19:26:08,651 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 215 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:08,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 47 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-31 19:26:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2022-01-31 19:26:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.0136986301369864) internal successors, (222), 219 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-01-31 19:26:08,729 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 242 [2022-01-31 19:26:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:08,729 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-01-31 19:26:08,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-01-31 19:26:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-31 19:26:08,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:08,730 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:08,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 19:26:08,730 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:08,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1119413628, now seen corresponding path program 98 times [2022-01-31 19:26:08,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:08,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872892052] [2022-01-31 19:26:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:08,731 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:08,731 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:08,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:08,737 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 19:26:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:26:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 19:26:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:11,639 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:11,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872892052] [2022-01-31 19:26:11,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [872892052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:11,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:11,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 19:26:11,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158589817] [2022-01-31 19:26:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:11,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 19:26:11,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 19:26:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:26:11,641 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:15,173 INFO L93 Difference]: Finished difference Result 254 states and 262 transitions. [2022-01-31 19:26:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 19:26:15,173 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 244 [2022-01-31 19:26:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:15,174 INFO L225 Difference]: With dead ends: 254 [2022-01-31 19:26:15,174 INFO L226 Difference]: Without dead ends: 230 [2022-01-31 19:26:15,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-01-31 19:26:15,176 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 217 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:15,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 62 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-31 19:26:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2022-01-31 19:26:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 221 states have (on average 1.0135746606334841) internal successors, (224), 221 states have internal predecessors, (224), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2022-01-31 19:26:15,244 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 244 [2022-01-31 19:26:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:15,244 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2022-01-31 19:26:15,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2022-01-31 19:26:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-31 19:26:15,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:15,245 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:15,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 19:26:15,245 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1186374690, now seen corresponding path program 99 times [2022-01-31 19:26:15,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989033333] [2022-01-31 19:26:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:15,247 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:15,247 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:15,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:15,252 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 19:26:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 19:26:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 19:26:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:18,119 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989033333] [2022-01-31 19:26:18,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [989033333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:18,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:18,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 19:26:18,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463643566] [2022-01-31 19:26:18,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:18,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 19:26:18,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 19:26:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:26:18,121 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 103 states, 103 states have (on average 2.1067961165048543) internal successors, (217), 102 states have internal predecessors, (217), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:21,678 INFO L93 Difference]: Finished difference Result 256 states and 264 transitions. [2022-01-31 19:26:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 19:26:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1067961165048543) internal successors, (217), 102 states have internal predecessors, (217), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2022-01-31 19:26:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:21,679 INFO L225 Difference]: With dead ends: 256 [2022-01-31 19:26:21,679 INFO L226 Difference]: Without dead ends: 232 [2022-01-31 19:26:21,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-01-31 19:26:21,681 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 219 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:21,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 57 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-01-31 19:26:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2022-01-31 19:26:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 223 states have (on average 1.0134529147982063) internal successors, (226), 223 states have internal predecessors, (226), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-01-31 19:26:21,757 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 246 [2022-01-31 19:26:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:21,757 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-01-31 19:26:21,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1067961165048543) internal successors, (217), 102 states have internal predecessors, (217), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-01-31 19:26:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-31 19:26:21,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:21,758 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:21,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 19:26:21,758 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -845823552, now seen corresponding path program 100 times [2022-01-31 19:26:21,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:21,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188718829] [2022-01-31 19:26:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:21,759 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:21,759 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:21,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:21,765 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 19:26:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:26:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:26:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:24,748 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:24,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188718829] [2022-01-31 19:26:24,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [188718829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:24,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:24,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 19:26:24,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576159730] [2022-01-31 19:26:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:24,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 19:26:24,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 19:26:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 19:26:24,751 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 104 states, 104 states have (on average 2.105769230769231) internal successors, (219), 103 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:28,411 INFO L93 Difference]: Finished difference Result 258 states and 266 transitions. [2022-01-31 19:26:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 19:26:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.105769230769231) internal successors, (219), 103 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 248 [2022-01-31 19:26:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:28,411 INFO L225 Difference]: With dead ends: 258 [2022-01-31 19:26:28,411 INFO L226 Difference]: Without dead ends: 234 [2022-01-31 19:26:28,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-01-31 19:26:28,413 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 221 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:28,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 62 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-31 19:26:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-01-31 19:26:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 225 states have (on average 1.0133333333333334) internal successors, (228), 225 states have internal predecessors, (228), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2022-01-31 19:26:28,477 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 248 [2022-01-31 19:26:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:28,477 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 237 transitions. [2022-01-31 19:26:28,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.105769230769231) internal successors, (219), 103 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 237 transitions. [2022-01-31 19:26:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-01-31 19:26:28,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:28,478 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:28,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 19:26:28,478 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:28,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash 6305570, now seen corresponding path program 101 times [2022-01-31 19:26:28,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:28,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532965475] [2022-01-31 19:26:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:28,480 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:28,480 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:28,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:28,485 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 19:26:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 19:26:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:26:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:31,476 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:31,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532965475] [2022-01-31 19:26:31,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1532965475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:31,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:31,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 19:26:31,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77829628] [2022-01-31 19:26:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:31,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 19:26:31,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 19:26:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 19:26:31,479 INFO L87 Difference]: Start difference. First operand 233 states and 237 transitions. Second operand has 105 states, 105 states have (on average 2.104761904761905) internal successors, (221), 104 states have internal predecessors, (221), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:35,191 INFO L93 Difference]: Finished difference Result 260 states and 268 transitions. [2022-01-31 19:26:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 19:26:35,191 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.104761904761905) internal successors, (221), 104 states have internal predecessors, (221), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 250 [2022-01-31 19:26:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:35,192 INFO L225 Difference]: With dead ends: 260 [2022-01-31 19:26:35,192 INFO L226 Difference]: Without dead ends: 236 [2022-01-31 19:26:35,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2022-01-31 19:26:35,194 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 223 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:35,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 52 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-31 19:26:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2022-01-31 19:26:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 227 states have (on average 1.013215859030837) internal successors, (230), 227 states have internal predecessors, (230), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 239 transitions. [2022-01-31 19:26:35,260 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 239 transitions. Word has length 250 [2022-01-31 19:26:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:35,260 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 239 transitions. [2022-01-31 19:26:35,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.104761904761905) internal successors, (221), 104 states have internal predecessors, (221), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 239 transitions. [2022-01-31 19:26:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-31 19:26:35,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:35,261 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:35,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 19:26:35,261 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1436361724, now seen corresponding path program 102 times [2022-01-31 19:26:35,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:35,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304008590] [2022-01-31 19:26:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:35,262 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:35,262 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:35,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:35,268 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 19:26:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:26:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 19:26:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:38,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:38,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304008590] [2022-01-31 19:26:38,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [304008590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:38,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:38,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 19:26:38,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928493035] [2022-01-31 19:26:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:38,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 19:26:38,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 19:26:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 19:26:38,374 INFO L87 Difference]: Start difference. First operand 235 states and 239 transitions. Second operand has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:42,141 INFO L93 Difference]: Finished difference Result 262 states and 270 transitions. [2022-01-31 19:26:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 19:26:42,142 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 252 [2022-01-31 19:26:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:42,142 INFO L225 Difference]: With dead ends: 262 [2022-01-31 19:26:42,143 INFO L226 Difference]: Without dead ends: 238 [2022-01-31 19:26:42,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2022-01-31 19:26:42,145 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 225 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:42,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 57 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-01-31 19:26:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2022-01-31 19:26:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 229 states have (on average 1.0131004366812226) internal successors, (232), 229 states have internal predecessors, (232), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2022-01-31 19:26:42,220 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 252 [2022-01-31 19:26:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:42,221 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2022-01-31 19:26:42,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2022-01-31 19:26:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 19:26:42,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:42,221 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:42,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 19:26:42,222 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash -565194650, now seen corresponding path program 103 times [2022-01-31 19:26:42,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:42,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145679966] [2022-01-31 19:26:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:42,223 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:42,223 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:42,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:42,228 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 19:26:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 19:26:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 19:26:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:45,352 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:45,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145679966] [2022-01-31 19:26:45,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [145679966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:45,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:45,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 19:26:45,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236760696] [2022-01-31 19:26:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:45,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 19:26:45,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 19:26:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 19:26:45,354 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand has 107 states, 107 states have (on average 2.102803738317757) internal successors, (225), 106 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:49,188 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2022-01-31 19:26:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 19:26:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.102803738317757) internal successors, (225), 106 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 254 [2022-01-31 19:26:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:49,189 INFO L225 Difference]: With dead ends: 264 [2022-01-31 19:26:49,189 INFO L226 Difference]: Without dead ends: 240 [2022-01-31 19:26:49,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2022-01-31 19:26:49,192 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 227 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:49,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 62 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-01-31 19:26:49,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2022-01-31 19:26:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 231 states have (on average 1.0129870129870129) internal successors, (234), 231 states have internal predecessors, (234), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2022-01-31 19:26:49,271 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 254 [2022-01-31 19:26:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:49,271 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2022-01-31 19:26:49,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.102803738317757) internal successors, (225), 106 states have internal predecessors, (225), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2022-01-31 19:26:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-31 19:26:49,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:49,272 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:49,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 19:26:49,272 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -892259256, now seen corresponding path program 104 times [2022-01-31 19:26:49,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:49,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818765784] [2022-01-31 19:26:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:49,273 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:49,273 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:49,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:49,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 19:26:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:26:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:26:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:52,497 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818765784] [2022-01-31 19:26:52,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [818765784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:52,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:52,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 19:26:52,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3158777] [2022-01-31 19:26:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:52,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 19:26:52,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 19:26:52,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 19:26:52,500 INFO L87 Difference]: Start difference. First operand 239 states and 243 transitions. Second operand has 108 states, 108 states have (on average 2.1018518518518516) internal successors, (227), 107 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:26:56,387 INFO L93 Difference]: Finished difference Result 266 states and 274 transitions. [2022-01-31 19:26:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 19:26:56,387 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.1018518518518516) internal successors, (227), 107 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 256 [2022-01-31 19:26:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:26:56,388 INFO L225 Difference]: With dead ends: 266 [2022-01-31 19:26:56,388 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 19:26:56,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2022-01-31 19:26:56,390 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 229 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:26:56,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 42 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:26:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 19:26:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2022-01-31 19:26:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 233 states have (on average 1.0128755364806867) internal successors, (236), 233 states have internal predecessors, (236), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:26:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2022-01-31 19:26:56,460 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 256 [2022-01-31 19:26:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:26:56,461 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2022-01-31 19:26:56,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.1018518518518516) internal successors, (227), 107 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:26:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2022-01-31 19:26:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-31 19:26:56,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:26:56,461 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:26:56,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 19:26:56,462 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:26:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:26:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1668733014, now seen corresponding path program 105 times [2022-01-31 19:26:56,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:26:56,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161342109] [2022-01-31 19:26:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:26:56,463 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:26:56,463 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:26:56,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:26:56,470 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:26:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:26:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 19:26:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 19:26:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:26:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:26:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:26:59,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:26:59,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161342109] [2022-01-31 19:26:59,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1161342109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:26:59,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:26:59,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 19:26:59,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851633445] [2022-01-31 19:26:59,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:26:59,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 19:26:59,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:26:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 19:26:59,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:26:59,700 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand has 109 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 108 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:03,617 INFO L93 Difference]: Finished difference Result 268 states and 276 transitions. [2022-01-31 19:27:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-31 19:27:03,617 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 108 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 258 [2022-01-31 19:27:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:03,618 INFO L225 Difference]: With dead ends: 268 [2022-01-31 19:27:03,618 INFO L226 Difference]: Without dead ends: 244 [2022-01-31 19:27:03,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2022-01-31 19:27:03,621 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 231 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:03,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 57 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-31 19:27:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2022-01-31 19:27:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 235 states have (on average 1.0127659574468084) internal successors, (238), 235 states have internal predecessors, (238), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2022-01-31 19:27:03,702 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 258 [2022-01-31 19:27:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:03,702 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 247 transitions. [2022-01-31 19:27:03,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 108 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 247 transitions. [2022-01-31 19:27:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-31 19:27:03,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:03,703 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:03,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 19:27:03,703 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -535704948, now seen corresponding path program 106 times [2022-01-31 19:27:03,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:03,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976023104] [2022-01-31 19:27:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:03,705 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:03,705 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:03,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:03,711 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 19:27:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:27:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 19:27:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:06,950 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:06,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976023104] [2022-01-31 19:27:06,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1976023104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:06,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:06,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 19:27:06,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261032040] [2022-01-31 19:27:06,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:06,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 19:27:06,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 19:27:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 19:27:06,953 INFO L87 Difference]: Start difference. First operand 243 states and 247 transitions. Second operand has 110 states, 110 states have (on average 2.1) internal successors, (231), 109 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:11,045 INFO L93 Difference]: Finished difference Result 270 states and 278 transitions. [2022-01-31 19:27:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 19:27:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.1) internal successors, (231), 109 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 260 [2022-01-31 19:27:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:11,046 INFO L225 Difference]: With dead ends: 270 [2022-01-31 19:27:11,046 INFO L226 Difference]: Without dead ends: 246 [2022-01-31 19:27:11,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2022-01-31 19:27:11,049 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 233 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:11,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 52 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-31 19:27:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2022-01-31 19:27:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 237 states have (on average 1.0126582278481013) internal successors, (240), 237 states have internal predecessors, (240), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2022-01-31 19:27:11,122 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 260 [2022-01-31 19:27:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2022-01-31 19:27:11,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.1) internal successors, (231), 109 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2022-01-31 19:27:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-31 19:27:11,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:11,123 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:11,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 19:27:11,123 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1677540590, now seen corresponding path program 107 times [2022-01-31 19:27:11,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:11,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086339900] [2022-01-31 19:27:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:11,124 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:11,124 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:11,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:11,136 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 19:27:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 19:27:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 19:27:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:14,497 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:14,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086339900] [2022-01-31 19:27:14,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2086339900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:14,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:14,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 19:27:14,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026998503] [2022-01-31 19:27:14,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:14,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 19:27:14,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:14,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 19:27:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 19:27:14,500 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand has 111 states, 111 states have (on average 2.099099099099099) internal successors, (233), 110 states have internal predecessors, (233), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:18,625 INFO L93 Difference]: Finished difference Result 272 states and 280 transitions. [2022-01-31 19:27:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 19:27:18,625 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.099099099099099) internal successors, (233), 110 states have internal predecessors, (233), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 262 [2022-01-31 19:27:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:18,626 INFO L225 Difference]: With dead ends: 272 [2022-01-31 19:27:18,626 INFO L226 Difference]: Without dead ends: 248 [2022-01-31 19:27:18,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2022-01-31 19:27:18,628 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 235 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:18,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 52 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-31 19:27:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2022-01-31 19:27:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2022-01-31 19:27:18,704 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 262 [2022-01-31 19:27:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:18,704 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2022-01-31 19:27:18,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.099099099099099) internal successors, (233), 110 states have internal predecessors, (233), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2022-01-31 19:27:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-31 19:27:18,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:18,705 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:18,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 19:27:18,705 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1697276208, now seen corresponding path program 108 times [2022-01-31 19:27:18,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:18,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678750337] [2022-01-31 19:27:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:18,706 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:18,706 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:18,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:18,713 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 19:27:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:22,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:27:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:27:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:22,143 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:22,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678750337] [2022-01-31 19:27:22,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [678750337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:22,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:22,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 19:27:22,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455306378] [2022-01-31 19:27:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:22,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 19:27:22,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 19:27:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 19:27:22,145 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand has 112 states, 112 states have (on average 2.0982142857142856) internal successors, (235), 111 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:26,340 INFO L93 Difference]: Finished difference Result 274 states and 282 transitions. [2022-01-31 19:27:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 19:27:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0982142857142856) internal successors, (235), 111 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 264 [2022-01-31 19:27:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:26,341 INFO L225 Difference]: With dead ends: 274 [2022-01-31 19:27:26,341 INFO L226 Difference]: Without dead ends: 250 [2022-01-31 19:27:26,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2022-01-31 19:27:26,344 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 237 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:26,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 32 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-31 19:27:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-01-31 19:27:26,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 241 states have (on average 1.012448132780083) internal successors, (244), 241 states have internal predecessors, (244), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 253 transitions. [2022-01-31 19:27:26,435 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 253 transitions. Word has length 264 [2022-01-31 19:27:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:26,435 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 253 transitions. [2022-01-31 19:27:26,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.0982142857142856) internal successors, (235), 111 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 253 transitions. [2022-01-31 19:27:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-31 19:27:26,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:26,436 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:26,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 19:27:26,436 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2099056690, now seen corresponding path program 109 times [2022-01-31 19:27:26,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:26,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779824674] [2022-01-31 19:27:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:26,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:26,437 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:26,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:26,444 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 19:27:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 19:27:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:27:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:29,916 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:29,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779824674] [2022-01-31 19:27:29,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779824674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:29,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:29,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 19:27:29,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038926717] [2022-01-31 19:27:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:29,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 19:27:29,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 19:27:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 19:27:29,918 INFO L87 Difference]: Start difference. First operand 249 states and 253 transitions. Second operand has 113 states, 113 states have (on average 2.0973451327433628) internal successors, (237), 112 states have internal predecessors, (237), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:34,240 INFO L93 Difference]: Finished difference Result 276 states and 284 transitions. [2022-01-31 19:27:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 19:27:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0973451327433628) internal successors, (237), 112 states have internal predecessors, (237), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 266 [2022-01-31 19:27:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:34,241 INFO L225 Difference]: With dead ends: 276 [2022-01-31 19:27:34,241 INFO L226 Difference]: Without dead ends: 252 [2022-01-31 19:27:34,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2022-01-31 19:27:34,244 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 239 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:34,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 57 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-01-31 19:27:34,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2022-01-31 19:27:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 243 states have internal predecessors, (246), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 255 transitions. [2022-01-31 19:27:34,329 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 255 transitions. Word has length 266 [2022-01-31 19:27:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:34,329 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 255 transitions. [2022-01-31 19:27:34,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.0973451327433628) internal successors, (237), 112 states have internal predecessors, (237), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 255 transitions. [2022-01-31 19:27:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-31 19:27:34,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:34,330 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:34,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 19:27:34,331 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash -347229932, now seen corresponding path program 110 times [2022-01-31 19:27:34,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102013035] [2022-01-31 19:27:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:34,332 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:34,332 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:34,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:34,339 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 19:27:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:27:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 19:27:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:37,864 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102013035] [2022-01-31 19:27:37,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [102013035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:37,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:37,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 19:27:37,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703398869] [2022-01-31 19:27:37,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:37,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 19:27:37,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 19:27:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 19:27:37,866 INFO L87 Difference]: Start difference. First operand 251 states and 255 transitions. Second operand has 114 states, 114 states have (on average 2.0964912280701755) internal successors, (239), 113 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:42,240 INFO L93 Difference]: Finished difference Result 278 states and 286 transitions. [2022-01-31 19:27:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 19:27:42,240 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.0964912280701755) internal successors, (239), 113 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 268 [2022-01-31 19:27:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:42,241 INFO L225 Difference]: With dead ends: 278 [2022-01-31 19:27:42,241 INFO L226 Difference]: Without dead ends: 254 [2022-01-31 19:27:42,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2022-01-31 19:27:42,244 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 241 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:42,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 72 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-31 19:27:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2022-01-31 19:27:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 245 states have (on average 1.0122448979591836) internal successors, (248), 245 states have internal predecessors, (248), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2022-01-31 19:27:42,329 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 268 [2022-01-31 19:27:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:42,330 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2022-01-31 19:27:42,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.0964912280701755) internal successors, (239), 113 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2022-01-31 19:27:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-31 19:27:42,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:42,330 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:42,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 19:27:42,331 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1881562762, now seen corresponding path program 111 times [2022-01-31 19:27:42,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:42,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052412145] [2022-01-31 19:27:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:42,332 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:42,332 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:42,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:42,339 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 19:27:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:45,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 19:27:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 19:27:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:45,931 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052412145] [2022-01-31 19:27:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1052412145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:45,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:45,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 19:27:45,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537996658] [2022-01-31 19:27:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 19:27:45,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 19:27:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 19:27:45,933 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand has 115 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 114 states have internal predecessors, (241), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:50,349 INFO L93 Difference]: Finished difference Result 280 states and 288 transitions. [2022-01-31 19:27:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-31 19:27:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 114 states have internal predecessors, (241), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 270 [2022-01-31 19:27:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:50,350 INFO L225 Difference]: With dead ends: 280 [2022-01-31 19:27:50,350 INFO L226 Difference]: Without dead ends: 256 [2022-01-31 19:27:50,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2022-01-31 19:27:50,354 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 243 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:50,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 57 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-01-31 19:27:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2022-01-31 19:27:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 247 states have (on average 1.0121457489878543) internal successors, (250), 247 states have internal predecessors, (250), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2022-01-31 19:27:50,445 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 270 [2022-01-31 19:27:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:50,445 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2022-01-31 19:27:50,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.0956521739130434) internal successors, (241), 114 states have internal predecessors, (241), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2022-01-31 19:27:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-31 19:27:50,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:50,446 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:50,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 19:27:50,446 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1093337432, now seen corresponding path program 112 times [2022-01-31 19:27:50,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179395533] [2022-01-31 19:27:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:50,447 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:50,447 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:50,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:50,454 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:27:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 19:27:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:27:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:27:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:27:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:27:54,121 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:27:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179395533] [2022-01-31 19:27:54,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1179395533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:27:54,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:27:54,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 19:27:54,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671540088] [2022-01-31 19:27:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:27:54,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 19:27:54,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:27:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 19:27:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 19:27:54,123 INFO L87 Difference]: Start difference. First operand 255 states and 259 transitions. Second operand has 116 states, 116 states have (on average 2.0948275862068964) internal successors, (243), 115 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:27:58,564 INFO L93 Difference]: Finished difference Result 282 states and 290 transitions. [2022-01-31 19:27:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 19:27:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0948275862068964) internal successors, (243), 115 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 272 [2022-01-31 19:27:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:27:58,565 INFO L225 Difference]: With dead ends: 282 [2022-01-31 19:27:58,565 INFO L226 Difference]: Without dead ends: 258 [2022-01-31 19:27:58,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2022-01-31 19:27:58,568 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 245 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:27:58,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 37 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:27:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-31 19:27:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2022-01-31 19:27:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 249 states have (on average 1.0120481927710843) internal successors, (252), 249 states have internal predecessors, (252), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:27:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2022-01-31 19:27:58,657 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 272 [2022-01-31 19:27:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:27:58,657 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 261 transitions. [2022-01-31 19:27:58,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.0948275862068964) internal successors, (243), 115 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:27:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 261 transitions. [2022-01-31 19:27:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-01-31 19:27:58,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:27:58,658 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:27:58,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 19:27:58,658 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:27:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:27:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -475795270, now seen corresponding path program 113 times [2022-01-31 19:27:58,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:27:58,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949433049] [2022-01-31 19:27:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:27:58,660 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:27:58,660 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:27:58,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:27:58,667 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:27:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 19:28:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 19:28:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:28:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:02,353 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:02,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949433049] [2022-01-31 19:28:02,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1949433049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:02,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:02,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 19:28:02,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033400952] [2022-01-31 19:28:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:02,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 19:28:02,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 19:28:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 19:28:02,356 INFO L87 Difference]: Start difference. First operand 257 states and 261 transitions. Second operand has 117 states, 117 states have (on average 2.094017094017094) internal successors, (245), 116 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:06,905 INFO L93 Difference]: Finished difference Result 284 states and 292 transitions. [2022-01-31 19:28:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 19:28:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.094017094017094) internal successors, (245), 116 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 274 [2022-01-31 19:28:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:06,906 INFO L225 Difference]: With dead ends: 284 [2022-01-31 19:28:06,906 INFO L226 Difference]: Without dead ends: 260 [2022-01-31 19:28:06,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2022-01-31 19:28:06,909 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 247 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:06,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 47 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-31 19:28:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-01-31 19:28:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions. [2022-01-31 19:28:06,989 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 274 [2022-01-31 19:28:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:06,989 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 263 transitions. [2022-01-31 19:28:06,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.094017094017094) internal successors, (245), 116 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 263 transitions. [2022-01-31 19:28:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-31 19:28:06,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:06,990 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:28:06,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 19:28:06,990 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash -878800996, now seen corresponding path program 114 times [2022-01-31 19:28:06,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:06,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38212735] [2022-01-31 19:28:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:06,991 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:06,991 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:06,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:06,998 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 19:28:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:28:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 19:28:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:10,774 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38212735] [2022-01-31 19:28:10,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [38212735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:10,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:10,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 19:28:10,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267104116] [2022-01-31 19:28:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:10,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 19:28:10,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 19:28:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 19:28:10,776 INFO L87 Difference]: Start difference. First operand 259 states and 263 transitions. Second operand has 118 states, 118 states have (on average 2.093220338983051) internal successors, (247), 117 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:15,428 INFO L93 Difference]: Finished difference Result 286 states and 294 transitions. [2022-01-31 19:28:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 19:28:15,429 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.093220338983051) internal successors, (247), 117 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 276 [2022-01-31 19:28:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:15,429 INFO L225 Difference]: With dead ends: 286 [2022-01-31 19:28:15,429 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 19:28:15,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2022-01-31 19:28:15,432 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 249 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:15,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 62 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 19:28:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2022-01-31 19:28:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 253 states have (on average 1.0118577075098814) internal successors, (256), 253 states have internal predecessors, (256), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2022-01-31 19:28:15,526 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 276 [2022-01-31 19:28:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:15,527 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2022-01-31 19:28:15,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.093220338983051) internal successors, (247), 117 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2022-01-31 19:28:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-31 19:28:15,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:15,528 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:28:15,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 19:28:15,528 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1620247042, now seen corresponding path program 115 times [2022-01-31 19:28:15,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529092345] [2022-01-31 19:28:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:15,529 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:15,529 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:15,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:15,536 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 19:28:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 19:28:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 19:28:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:19,311 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:19,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529092345] [2022-01-31 19:28:19,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [529092345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:19,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:19,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 19:28:19,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137148602] [2022-01-31 19:28:19,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:19,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 19:28:19,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 19:28:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 19:28:19,313 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand has 119 states, 119 states have (on average 2.092436974789916) internal successors, (249), 118 states have internal predecessors, (249), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:24,082 INFO L93 Difference]: Finished difference Result 288 states and 296 transitions. [2022-01-31 19:28:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 19:28:24,082 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.092436974789916) internal successors, (249), 118 states have internal predecessors, (249), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 278 [2022-01-31 19:28:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:24,084 INFO L225 Difference]: With dead ends: 288 [2022-01-31 19:28:24,084 INFO L226 Difference]: Without dead ends: 264 [2022-01-31 19:28:24,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2022-01-31 19:28:24,086 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 251 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:24,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 62 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-31 19:28:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2022-01-31 19:28:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 255 states have (on average 1.011764705882353) internal successors, (258), 255 states have internal predecessors, (258), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2022-01-31 19:28:24,169 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 278 [2022-01-31 19:28:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:24,169 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2022-01-31 19:28:24,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.092436974789916) internal successors, (249), 118 states have internal predecessors, (249), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2022-01-31 19:28:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-01-31 19:28:24,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:24,170 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:28:24,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 19:28:24,170 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1185326112, now seen corresponding path program 116 times [2022-01-31 19:28:24,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:24,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784651850] [2022-01-31 19:28:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:24,176 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:24,176 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:24,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:24,183 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:28,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 19:28:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:28:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:28:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:28,082 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:28,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784651850] [2022-01-31 19:28:28,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1784651850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:28,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:28,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 19:28:28,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165193271] [2022-01-31 19:28:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:28,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 19:28:28,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 19:28:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 19:28:28,087 INFO L87 Difference]: Start difference. First operand 263 states and 267 transitions. Second operand has 120 states, 120 states have (on average 2.091666666666667) internal successors, (251), 119 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:32,863 INFO L93 Difference]: Finished difference Result 290 states and 298 transitions. [2022-01-31 19:28:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 19:28:32,864 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.091666666666667) internal successors, (251), 119 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 280 [2022-01-31 19:28:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:32,864 INFO L225 Difference]: With dead ends: 290 [2022-01-31 19:28:32,864 INFO L226 Difference]: Without dead ends: 266 [2022-01-31 19:28:32,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2022-01-31 19:28:32,867 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 253 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:32,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 42 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-31 19:28:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2022-01-31 19:28:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 257 states have internal predecessors, (260), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2022-01-31 19:28:32,963 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 280 [2022-01-31 19:28:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:32,963 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 269 transitions. [2022-01-31 19:28:32,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.091666666666667) internal successors, (251), 119 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 269 transitions. [2022-01-31 19:28:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-31 19:28:32,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:32,964 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:28:32,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 19:28:32,964 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 161859906, now seen corresponding path program 117 times [2022-01-31 19:28:32,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101325785] [2022-01-31 19:28:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:32,966 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:32,966 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:32,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:32,973 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 19:28:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 19:28:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:28:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:36,895 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:36,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101325785] [2022-01-31 19:28:36,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1101325785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:36,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:36,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 19:28:36,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191794773] [2022-01-31 19:28:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:36,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 19:28:36,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 19:28:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 19:28:36,897 INFO L87 Difference]: Start difference. First operand 265 states and 269 transitions. Second operand has 121 states, 121 states have (on average 2.090909090909091) internal successors, (253), 120 states have internal predecessors, (253), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:41,836 INFO L93 Difference]: Finished difference Result 292 states and 300 transitions. [2022-01-31 19:28:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 19:28:41,836 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.090909090909091) internal successors, (253), 120 states have internal predecessors, (253), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 282 [2022-01-31 19:28:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:41,837 INFO L225 Difference]: With dead ends: 292 [2022-01-31 19:28:41,837 INFO L226 Difference]: Without dead ends: 268 [2022-01-31 19:28:41,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2022-01-31 19:28:41,840 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 255 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:41,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 77 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:28:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-31 19:28:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2022-01-31 19:28:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 259 states have (on average 1.0115830115830116) internal successors, (262), 259 states have internal predecessors, (262), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 271 transitions. [2022-01-31 19:28:41,937 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 271 transitions. Word has length 282 [2022-01-31 19:28:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:41,937 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 271 transitions. [2022-01-31 19:28:41,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.090909090909091) internal successors, (253), 120 states have internal predecessors, (253), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 271 transitions. [2022-01-31 19:28:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-01-31 19:28:41,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:41,938 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:28:41,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 19:28:41,938 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2022467108, now seen corresponding path program 118 times [2022-01-31 19:28:41,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:41,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151294536] [2022-01-31 19:28:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:41,940 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:41,940 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:41,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:41,948 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 19:28:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:28:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 19:28:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:45,971 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:45,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151294536] [2022-01-31 19:28:45,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [151294536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:45,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:45,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 19:28:45,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819960277] [2022-01-31 19:28:45,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:45,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 19:28:45,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 19:28:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 19:28:45,973 INFO L87 Difference]: Start difference. First operand 267 states and 271 transitions. Second operand has 122 states, 122 states have (on average 2.0901639344262297) internal successors, (255), 121 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:28:50,874 INFO L93 Difference]: Finished difference Result 294 states and 302 transitions. [2022-01-31 19:28:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 19:28:50,875 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.0901639344262297) internal successors, (255), 121 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 284 [2022-01-31 19:28:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:28:50,875 INFO L225 Difference]: With dead ends: 294 [2022-01-31 19:28:50,875 INFO L226 Difference]: Without dead ends: 270 [2022-01-31 19:28:50,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2022-01-31 19:28:50,879 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 257 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:28:50,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 52 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:28:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-31 19:28:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2022-01-31 19:28:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 261 states have (on average 1.0114942528735633) internal successors, (264), 261 states have internal predecessors, (264), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:28:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2022-01-31 19:28:50,977 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 284 [2022-01-31 19:28:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:28:50,978 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2022-01-31 19:28:50,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.0901639344262297) internal successors, (255), 121 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:28:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2022-01-31 19:28:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-31 19:28:50,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:28:50,979 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:28:50,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 19:28:50,979 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:28:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:28:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash -935374202, now seen corresponding path program 119 times [2022-01-31 19:28:50,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:28:50,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103283878] [2022-01-31 19:28:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:28:50,980 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:28:50,980 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:28:50,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:28:50,987 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:28:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:28:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 19:28:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:55,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 19:28:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 19:28:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:28:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:28:55,125 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:28:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103283878] [2022-01-31 19:28:55,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103283878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:28:55,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:28:55,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 19:28:55,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834460738] [2022-01-31 19:28:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:28:55,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 19:28:55,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:28:55,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 19:28:55,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 19:28:55,128 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand has 123 states, 123 states have (on average 2.089430894308943) internal successors, (257), 122 states have internal predecessors, (257), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:00,157 INFO L93 Difference]: Finished difference Result 296 states and 304 transitions. [2022-01-31 19:29:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-31 19:29:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.089430894308943) internal successors, (257), 122 states have internal predecessors, (257), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 286 [2022-01-31 19:29:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:00,158 INFO L225 Difference]: With dead ends: 296 [2022-01-31 19:29:00,158 INFO L226 Difference]: Without dead ends: 272 [2022-01-31 19:29:00,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2022-01-31 19:29:00,173 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 259 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:00,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 62 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:29:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-31 19:29:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-01-31 19:29:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 263 states have (on average 1.0114068441064639) internal successors, (266), 263 states have internal predecessors, (266), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 275 transitions. [2022-01-31 19:29:00,262 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 275 transitions. Word has length 286 [2022-01-31 19:29:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:00,262 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 275 transitions. [2022-01-31 19:29:00,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.089430894308943) internal successors, (257), 122 states have internal predecessors, (257), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:00,263 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 275 transitions. [2022-01-31 19:29:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-31 19:29:00,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:00,263 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:00,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 19:29:00,263 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -152523160, now seen corresponding path program 120 times [2022-01-31 19:29:00,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:00,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607727353] [2022-01-31 19:29:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:00,265 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:00,265 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:00,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:00,272 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 19:29:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:29:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:29:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:04,418 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:04,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607727353] [2022-01-31 19:29:04,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [607727353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:04,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:04,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 19:29:04,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325561003] [2022-01-31 19:29:04,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:04,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 19:29:04,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 19:29:04,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 19:29:04,420 INFO L87 Difference]: Start difference. First operand 271 states and 275 transitions. Second operand has 124 states, 124 states have (on average 2.088709677419355) internal successors, (259), 123 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:09,527 INFO L93 Difference]: Finished difference Result 298 states and 306 transitions. [2022-01-31 19:29:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 19:29:09,527 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.088709677419355) internal successors, (259), 123 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 288 [2022-01-31 19:29:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:09,528 INFO L225 Difference]: With dead ends: 298 [2022-01-31 19:29:09,528 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 19:29:09,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2022-01-31 19:29:09,531 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 261 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:09,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 82 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:29:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 19:29:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-01-31 19:29:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 265 states have (on average 1.0113207547169811) internal successors, (268), 265 states have internal predecessors, (268), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 277 transitions. [2022-01-31 19:29:09,621 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 277 transitions. Word has length 288 [2022-01-31 19:29:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:09,621 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 277 transitions. [2022-01-31 19:29:09,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.088709677419355) internal successors, (259), 123 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 277 transitions. [2022-01-31 19:29:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-31 19:29:09,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:09,622 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:09,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 19:29:09,622 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash 548051402, now seen corresponding path program 121 times [2022-01-31 19:29:09,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647378610] [2022-01-31 19:29:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:09,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:09,623 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:09,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:09,631 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 19:29:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 19:29:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:29:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:13,877 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:13,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647378610] [2022-01-31 19:29:13,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [647378610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:13,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:13,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 19:29:13,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111378976] [2022-01-31 19:29:13,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:13,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 19:29:13,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 19:29:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 19:29:13,880 INFO L87 Difference]: Start difference. First operand 273 states and 277 transitions. Second operand has 125 states, 125 states have (on average 2.088) internal successors, (261), 124 states have internal predecessors, (261), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:19,077 INFO L93 Difference]: Finished difference Result 300 states and 308 transitions. [2022-01-31 19:29:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 19:29:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.088) internal successors, (261), 124 states have internal predecessors, (261), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 290 [2022-01-31 19:29:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:19,078 INFO L225 Difference]: With dead ends: 300 [2022-01-31 19:29:19,078 INFO L226 Difference]: Without dead ends: 276 [2022-01-31 19:29:19,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2022-01-31 19:29:19,081 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 263 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:19,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 52 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:29:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-01-31 19:29:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2022-01-31 19:29:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 267 states have (on average 1.0112359550561798) internal successors, (270), 267 states have internal predecessors, (270), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 279 transitions. [2022-01-31 19:29:19,189 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 279 transitions. Word has length 290 [2022-01-31 19:29:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:19,189 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 279 transitions. [2022-01-31 19:29:19,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.088) internal successors, (261), 124 states have internal predecessors, (261), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 279 transitions. [2022-01-31 19:29:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-31 19:29:19,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:19,190 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:19,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 19:29:19,190 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash -509659988, now seen corresponding path program 122 times [2022-01-31 19:29:19,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:19,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384946689] [2022-01-31 19:29:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:19,191 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:19,191 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:19,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:19,199 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 19:29:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:29:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 19:29:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:23,518 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:23,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384946689] [2022-01-31 19:29:23,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384946689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:23,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:23,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 19:29:23,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102372679] [2022-01-31 19:29:23,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:23,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 19:29:23,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 19:29:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 19:29:23,521 INFO L87 Difference]: Start difference. First operand 275 states and 279 transitions. Second operand has 126 states, 126 states have (on average 2.0873015873015874) internal successors, (263), 125 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:28,753 INFO L93 Difference]: Finished difference Result 302 states and 310 transitions. [2022-01-31 19:29:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 19:29:28,753 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.0873015873015874) internal successors, (263), 125 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 292 [2022-01-31 19:29:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:28,754 INFO L225 Difference]: With dead ends: 302 [2022-01-31 19:29:28,754 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 19:29:28,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752 [2022-01-31 19:29:28,757 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 265 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:28,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 62 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:29:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 19:29:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2022-01-31 19:29:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 269 states have (on average 1.0111524163568772) internal successors, (272), 269 states have internal predecessors, (272), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2022-01-31 19:29:28,848 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 292 [2022-01-31 19:29:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:28,849 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2022-01-31 19:29:28,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.0873015873015874) internal successors, (263), 125 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2022-01-31 19:29:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-31 19:29:28,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:28,850 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:28,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 19:29:28,850 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash 936943374, now seen corresponding path program 123 times [2022-01-31 19:29:28,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:28,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103766261] [2022-01-31 19:29:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:28,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:28,851 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:28,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:28,859 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 19:29:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 19:29:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 19:29:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:33,233 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:33,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103766261] [2022-01-31 19:29:33,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1103766261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:33,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:33,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 19:29:33,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236067234] [2022-01-31 19:29:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:33,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 19:29:33,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 19:29:33,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 19:29:33,244 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand has 127 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 126 states have internal predecessors, (265), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:38,613 INFO L93 Difference]: Finished difference Result 304 states and 312 transitions. [2022-01-31 19:29:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 19:29:38,614 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 126 states have internal predecessors, (265), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 294 [2022-01-31 19:29:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:38,614 INFO L225 Difference]: With dead ends: 304 [2022-01-31 19:29:38,614 INFO L226 Difference]: Without dead ends: 280 [2022-01-31 19:29:38,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2022-01-31 19:29:38,617 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 267 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:38,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 72 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:29:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-01-31 19:29:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2022-01-31 19:29:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 283 transitions. [2022-01-31 19:29:38,724 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 283 transitions. Word has length 294 [2022-01-31 19:29:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:38,724 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 283 transitions. [2022-01-31 19:29:38,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 126 states have internal predecessors, (265), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 283 transitions. [2022-01-31 19:29:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-31 19:29:38,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:38,725 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:38,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 19:29:38,725 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash -446629648, now seen corresponding path program 124 times [2022-01-31 19:29:38,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:38,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031556786] [2022-01-31 19:29:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:38,727 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:38,727 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:38,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:38,734 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 19:29:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:29:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:29:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:43,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:43,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031556786] [2022-01-31 19:29:43,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031556786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:43,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:43,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 19:29:43,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217424233] [2022-01-31 19:29:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:43,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 19:29:43,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 19:29:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 19:29:43,195 INFO L87 Difference]: Start difference. First operand 279 states and 283 transitions. Second operand has 128 states, 128 states have (on average 2.0859375) internal successors, (267), 127 states have internal predecessors, (267), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:48,590 INFO L93 Difference]: Finished difference Result 306 states and 314 transitions. [2022-01-31 19:29:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 19:29:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0859375) internal successors, (267), 127 states have internal predecessors, (267), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 296 [2022-01-31 19:29:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:48,591 INFO L225 Difference]: With dead ends: 306 [2022-01-31 19:29:48,591 INFO L226 Difference]: Without dead ends: 282 [2022-01-31 19:29:48,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756 [2022-01-31 19:29:48,594 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 269 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:48,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 62 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:29:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-31 19:29:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2022-01-31 19:29:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 273 states have (on average 1.010989010989011) internal successors, (276), 273 states have internal predecessors, (276), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 285 transitions. [2022-01-31 19:29:48,691 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 285 transitions. Word has length 296 [2022-01-31 19:29:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:48,691 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 285 transitions. [2022-01-31 19:29:48,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0859375) internal successors, (267), 127 states have internal predecessors, (267), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 285 transitions. [2022-01-31 19:29:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-01-31 19:29:48,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:48,692 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:48,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 19:29:48,692 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:48,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:48,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1379557970, now seen corresponding path program 125 times [2022-01-31 19:29:48,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:48,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924214409] [2022-01-31 19:29:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:48,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:48,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:48,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:48,713 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:29:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 19:29:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:53,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 19:29:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:29:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:29:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:29:53,221 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:29:53,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924214409] [2022-01-31 19:29:53,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1924214409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:29:53,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:29:53,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 19:29:53,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632722478] [2022-01-31 19:29:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:29:53,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 19:29:53,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:29:53,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 19:29:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 19:29:53,225 INFO L87 Difference]: Start difference. First operand 281 states and 285 transitions. Second operand has 129 states, 129 states have (on average 2.0852713178294575) internal successors, (269), 128 states have internal predecessors, (269), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:29:58,757 INFO L93 Difference]: Finished difference Result 308 states and 316 transitions. [2022-01-31 19:29:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 19:29:58,757 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0852713178294575) internal successors, (269), 128 states have internal predecessors, (269), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 298 [2022-01-31 19:29:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:29:58,758 INFO L225 Difference]: With dead ends: 308 [2022-01-31 19:29:58,758 INFO L226 Difference]: Without dead ends: 284 [2022-01-31 19:29:58,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770 [2022-01-31 19:29:58,761 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 271 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:29:58,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 67 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:29:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-31 19:29:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2022-01-31 19:29:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 1.010909090909091) internal successors, (278), 275 states have internal predecessors, (278), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:29:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 287 transitions. [2022-01-31 19:29:58,857 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 287 transitions. Word has length 298 [2022-01-31 19:29:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:29:58,857 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 287 transitions. [2022-01-31 19:29:58,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0852713178294575) internal successors, (269), 128 states have internal predecessors, (269), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:29:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 287 transitions. [2022-01-31 19:29:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-31 19:29:58,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:29:58,859 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:29:58,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 19:29:58,859 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:29:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:29:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -295765196, now seen corresponding path program 126 times [2022-01-31 19:29:58,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:29:58,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779833134] [2022-01-31 19:29:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:29:58,860 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:29:58,860 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:29:58,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:29:58,868 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:29:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 19:30:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:30:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 19:30:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:03,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779833134] [2022-01-31 19:30:03,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [779833134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:03,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:03,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 19:30:03,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098949539] [2022-01-31 19:30:03,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:03,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 19:30:03,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 19:30:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 19:30:03,445 INFO L87 Difference]: Start difference. First operand 283 states and 287 transitions. Second operand has 130 states, 130 states have (on average 2.0846153846153848) internal successors, (271), 129 states have internal predecessors, (271), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:09,123 INFO L93 Difference]: Finished difference Result 310 states and 318 transitions. [2022-01-31 19:30:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 19:30:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0846153846153848) internal successors, (271), 129 states have internal predecessors, (271), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 300 [2022-01-31 19:30:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:09,124 INFO L225 Difference]: With dead ends: 310 [2022-01-31 19:30:09,124 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 19:30:09,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792 [2022-01-31 19:30:09,127 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 273 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:09,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 52 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 19:30:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-01-31 19:30:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 277 states have (on average 1.0108303249097472) internal successors, (280), 277 states have internal predecessors, (280), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2022-01-31 19:30:09,227 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 300 [2022-01-31 19:30:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:09,227 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2022-01-31 19:30:09,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0846153846153848) internal successors, (271), 129 states have internal predecessors, (271), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2022-01-31 19:30:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-01-31 19:30:09,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:09,228 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:30:09,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 19:30:09,228 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 331408278, now seen corresponding path program 127 times [2022-01-31 19:30:09,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011758314] [2022-01-31 19:30:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:09,230 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:09,230 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:09,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:09,238 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 19:30:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 19:30:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 19:30:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:13,926 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011758314] [2022-01-31 19:30:13,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1011758314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:13,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:13,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 19:30:13,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103733485] [2022-01-31 19:30:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:13,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 19:30:13,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 19:30:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 19:30:13,929 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand has 131 states, 131 states have (on average 2.0839694656488548) internal successors, (273), 130 states have internal predecessors, (273), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:19,606 INFO L93 Difference]: Finished difference Result 312 states and 320 transitions. [2022-01-31 19:30:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 19:30:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.0839694656488548) internal successors, (273), 130 states have internal predecessors, (273), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 302 [2022-01-31 19:30:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:19,607 INFO L225 Difference]: With dead ends: 312 [2022-01-31 19:30:19,607 INFO L226 Difference]: Without dead ends: 288 [2022-01-31 19:30:19,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2022-01-31 19:30:19,610 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 275 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:19,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 47 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:30:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-31 19:30:19,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2022-01-31 19:30:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 279 states have (on average 1.010752688172043) internal successors, (282), 279 states have internal predecessors, (282), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 291 transitions. [2022-01-31 19:30:19,723 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 291 transitions. Word has length 302 [2022-01-31 19:30:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:19,723 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 291 transitions. [2022-01-31 19:30:19,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.0839694656488548) internal successors, (273), 130 states have internal predecessors, (273), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 291 transitions. [2022-01-31 19:30:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-01-31 19:30:19,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:19,724 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:30:19,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 19:30:19,724 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1749695352, now seen corresponding path program 128 times [2022-01-31 19:30:19,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:19,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833791627] [2022-01-31 19:30:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:19,726 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:19,726 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:19,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:19,734 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 19:30:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:30:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:30:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:24,486 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:24,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833791627] [2022-01-31 19:30:24,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1833791627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:24,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:24,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 19:30:24,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059583711] [2022-01-31 19:30:24,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:24,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 19:30:24,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 19:30:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 19:30:24,489 INFO L87 Difference]: Start difference. First operand 287 states and 291 transitions. Second operand has 132 states, 132 states have (on average 2.0833333333333335) internal successors, (275), 131 states have internal predecessors, (275), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:30,266 INFO L93 Difference]: Finished difference Result 314 states and 322 transitions. [2022-01-31 19:30:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 19:30:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.0833333333333335) internal successors, (275), 131 states have internal predecessors, (275), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 304 [2022-01-31 19:30:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:30,267 INFO L225 Difference]: With dead ends: 314 [2022-01-31 19:30:30,267 INFO L226 Difference]: Without dead ends: 290 [2022-01-31 19:30:30,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860 [2022-01-31 19:30:30,270 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 277 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:30,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 57 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:30,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-31 19:30:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2022-01-31 19:30:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 281 states have (on average 1.01067615658363) internal successors, (284), 281 states have internal predecessors, (284), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 293 transitions. [2022-01-31 19:30:30,382 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 293 transitions. Word has length 304 [2022-01-31 19:30:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:30,382 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 293 transitions. [2022-01-31 19:30:30,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.0833333333333335) internal successors, (275), 131 states have internal predecessors, (275), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 293 transitions. [2022-01-31 19:30:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-01-31 19:30:30,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:30,383 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:30:30,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 19:30:30,383 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1076026662, now seen corresponding path program 129 times [2022-01-31 19:30:30,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:30,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855750427] [2022-01-31 19:30:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:30,385 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:30,385 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:30,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:30,393 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 19:30:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 19:30:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:30:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:35,262 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855750427] [2022-01-31 19:30:35,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [855750427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:35,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:35,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 19:30:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327329845] [2022-01-31 19:30:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:35,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 19:30:35,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 19:30:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 19:30:35,265 INFO L87 Difference]: Start difference. First operand 289 states and 293 transitions. Second operand has 133 states, 133 states have (on average 2.082706766917293) internal successors, (277), 132 states have internal predecessors, (277), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:41,228 INFO L93 Difference]: Finished difference Result 316 states and 324 transitions. [2022-01-31 19:30:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 19:30:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.082706766917293) internal successors, (277), 132 states have internal predecessors, (277), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 306 [2022-01-31 19:30:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:41,229 INFO L225 Difference]: With dead ends: 316 [2022-01-31 19:30:41,229 INFO L226 Difference]: Without dead ends: 292 [2022-01-31 19:30:41,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906 [2022-01-31 19:30:41,233 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 279 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:41,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 67 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-31 19:30:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2022-01-31 19:30:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 283 states have (on average 1.010600706713781) internal successors, (286), 283 states have internal predecessors, (286), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 295 transitions. [2022-01-31 19:30:41,356 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 295 transitions. Word has length 306 [2022-01-31 19:30:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:41,357 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 295 transitions. [2022-01-31 19:30:41,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.082706766917293) internal successors, (277), 132 states have internal predecessors, (277), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 295 transitions. [2022-01-31 19:30:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-31 19:30:41,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:41,358 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:30:41,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 19:30:41,358 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:41,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:41,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2119416252, now seen corresponding path program 130 times [2022-01-31 19:30:41,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:41,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199054477] [2022-01-31 19:30:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:41,359 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:41,359 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:41,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:41,368 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 19:30:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:30:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:46,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 19:30:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:46,331 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:46,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199054477] [2022-01-31 19:30:46,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1199054477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:46,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:46,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-01-31 19:30:46,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617583200] [2022-01-31 19:30:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:46,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-01-31 19:30:46,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-01-31 19:30:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 19:30:46,335 INFO L87 Difference]: Start difference. First operand 291 states and 295 transitions. Second operand has 134 states, 134 states have (on average 2.082089552238806) internal successors, (279), 133 states have internal predecessors, (279), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:30:52,585 INFO L93 Difference]: Finished difference Result 318 states and 326 transitions. [2022-01-31 19:30:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 19:30:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.082089552238806) internal successors, (279), 133 states have internal predecessors, (279), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 308 [2022-01-31 19:30:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:30:52,586 INFO L225 Difference]: With dead ends: 318 [2022-01-31 19:30:52,586 INFO L226 Difference]: Without dead ends: 294 [2022-01-31 19:30:52,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960 [2022-01-31 19:30:52,589 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 281 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:30:52,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 57 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:30:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-31 19:30:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2022-01-31 19:30:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 285 states have (on average 1.0105263157894737) internal successors, (288), 285 states have internal predecessors, (288), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:30:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2022-01-31 19:30:52,720 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 308 [2022-01-31 19:30:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:30:52,720 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 297 transitions. [2022-01-31 19:30:52,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.082089552238806) internal successors, (279), 133 states have internal predecessors, (279), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:30:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 297 transitions. [2022-01-31 19:30:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-31 19:30:52,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:30:52,721 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:30:52,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 19:30:52,721 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:30:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:30:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2038439966, now seen corresponding path program 131 times [2022-01-31 19:30:52,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:30:52,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842119699] [2022-01-31 19:30:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:30:52,722 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:30:52,723 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:30:52,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:30:52,732 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:30:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:30:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 19:30:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 19:30:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 19:30:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:30:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:30:57,877 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:30:57,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842119699] [2022-01-31 19:30:57,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1842119699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:30:57,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:30:57,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-01-31 19:30:57,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211222134] [2022-01-31 19:30:57,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:30:57,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 19:30:57,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:30:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 19:30:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 19:30:57,880 INFO L87 Difference]: Start difference. First operand 293 states and 297 transitions. Second operand has 135 states, 135 states have (on average 2.0814814814814815) internal successors, (281), 134 states have internal predecessors, (281), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:04,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:04,046 INFO L93 Difference]: Finished difference Result 320 states and 328 transitions. [2022-01-31 19:31:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-31 19:31:04,046 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.0814814814814815) internal successors, (281), 134 states have internal predecessors, (281), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 310 [2022-01-31 19:31:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:04,047 INFO L225 Difference]: With dead ends: 320 [2022-01-31 19:31:04,047 INFO L226 Difference]: Without dead ends: 296 [2022-01-31 19:31:04,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2022-01-31 19:31:04,050 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 283 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:04,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 57 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-31 19:31:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2022-01-31 19:31:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 287 states have (on average 1.0104529616724738) internal successors, (290), 287 states have internal predecessors, (290), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 299 transitions. [2022-01-31 19:31:04,158 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 299 transitions. Word has length 310 [2022-01-31 19:31:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:04,158 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 299 transitions. [2022-01-31 19:31:04,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.0814814814814815) internal successors, (281), 134 states have internal predecessors, (281), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 299 transitions. [2022-01-31 19:31:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-31 19:31:04,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:04,159 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:31:04,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-31 19:31:04,159 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1529640448, now seen corresponding path program 132 times [2022-01-31 19:31:04,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:04,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272974944] [2022-01-31 19:31:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:04,160 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:04,160 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:04,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:04,170 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 19:31:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:31:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 19:31:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:09,297 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:09,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272974944] [2022-01-31 19:31:09,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1272974944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:09,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:09,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136 [2022-01-31 19:31:09,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142298679] [2022-01-31 19:31:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:09,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-01-31 19:31:09,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-01-31 19:31:09,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 19:31:09,300 INFO L87 Difference]: Start difference. First operand 295 states and 299 transitions. Second operand has 136 states, 136 states have (on average 2.0808823529411766) internal successors, (283), 135 states have internal predecessors, (283), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:15,582 INFO L93 Difference]: Finished difference Result 322 states and 330 transitions. [2022-01-31 19:31:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-31 19:31:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.0808823529411766) internal successors, (283), 135 states have internal predecessors, (283), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 312 [2022-01-31 19:31:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:15,584 INFO L225 Difference]: With dead ends: 322 [2022-01-31 19:31:15,584 INFO L226 Difference]: Without dead ends: 298 [2022-01-31 19:31:15,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092 [2022-01-31 19:31:15,588 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 285 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:15,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 67 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-31 19:31:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2022-01-31 19:31:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 289 states have (on average 1.0103806228373702) internal successors, (292), 289 states have internal predecessors, (292), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 301 transitions. [2022-01-31 19:31:15,723 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 301 transitions. Word has length 312 [2022-01-31 19:31:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:15,723 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 301 transitions. [2022-01-31 19:31:15,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.0808823529411766) internal successors, (283), 135 states have internal predecessors, (283), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 301 transitions. [2022-01-31 19:31:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-31 19:31:15,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:15,724 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:31:15,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-31 19:31:15,725 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2095391902, now seen corresponding path program 133 times [2022-01-31 19:31:15,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:15,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258662906] [2022-01-31 19:31:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:15,726 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:15,726 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:15,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:15,736 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 19:31:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 19:31:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 19:31:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:20,997 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258662906] [2022-01-31 19:31:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [258662906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:20,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:20,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137 [2022-01-31 19:31:20,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325172603] [2022-01-31 19:31:20,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:20,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-01-31 19:31:20,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-01-31 19:31:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 19:31:21,000 INFO L87 Difference]: Start difference. First operand 297 states and 301 transitions. Second operand has 137 states, 137 states have (on average 2.0802919708029197) internal successors, (285), 136 states have internal predecessors, (285), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:27,422 INFO L93 Difference]: Finished difference Result 324 states and 332 transitions. [2022-01-31 19:31:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-31 19:31:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.0802919708029197) internal successors, (285), 136 states have internal predecessors, (285), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 314 [2022-01-31 19:31:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:27,423 INFO L225 Difference]: With dead ends: 324 [2022-01-31 19:31:27,424 INFO L226 Difference]: Without dead ends: 300 [2022-01-31 19:31:27,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170 [2022-01-31 19:31:27,428 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 287 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:27,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 57 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-31 19:31:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2022-01-31 19:31:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 291 states have (on average 1.0103092783505154) internal successors, (294), 291 states have internal predecessors, (294), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 303 transitions. [2022-01-31 19:31:27,550 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 303 transitions. Word has length 314 [2022-01-31 19:31:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:27,551 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 303 transitions. [2022-01-31 19:31:27,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.0802919708029197) internal successors, (285), 136 states have internal predecessors, (285), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 303 transitions. [2022-01-31 19:31:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-01-31 19:31:27,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:27,552 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:31:27,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-31 19:31:27,552 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1761964100, now seen corresponding path program 134 times [2022-01-31 19:31:27,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:27,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552761342] [2022-01-31 19:31:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:27,553 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:27,553 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:27,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:27,563 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 19:31:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:31:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 19:31:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:32,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:32,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552761342] [2022-01-31 19:31:32,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [552761342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:32,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:32,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138 [2022-01-31 19:31:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088662145] [2022-01-31 19:31:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-01-31 19:31:32,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-01-31 19:31:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 19:31:32,889 INFO L87 Difference]: Start difference. First operand 299 states and 303 transitions. Second operand has 138 states, 138 states have (on average 2.079710144927536) internal successors, (287), 137 states have internal predecessors, (287), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:39,427 INFO L93 Difference]: Finished difference Result 326 states and 334 transitions. [2022-01-31 19:31:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-31 19:31:39,428 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.079710144927536) internal successors, (287), 137 states have internal predecessors, (287), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 316 [2022-01-31 19:31:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:39,428 INFO L225 Difference]: With dead ends: 326 [2022-01-31 19:31:39,428 INFO L226 Difference]: Without dead ends: 302 [2022-01-31 19:31:39,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256 [2022-01-31 19:31:39,432 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 289 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:39,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 62 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-31 19:31:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2022-01-31 19:31:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 293 states have (on average 1.0102389078498293) internal successors, (296), 293 states have internal predecessors, (296), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2022-01-31 19:31:39,565 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 316 [2022-01-31 19:31:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:39,565 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2022-01-31 19:31:39,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.079710144927536) internal successors, (287), 137 states have internal predecessors, (287), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2022-01-31 19:31:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-31 19:31:39,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:39,567 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:31:39,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-31 19:31:39,567 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2124305574, now seen corresponding path program 135 times [2022-01-31 19:31:39,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:39,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866806176] [2022-01-31 19:31:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:39,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:39,568 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:39,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:39,578 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 19:31:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 19:31:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 19:31:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:44,911 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:44,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866806176] [2022-01-31 19:31:44,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1866806176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:44,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:44,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139 [2022-01-31 19:31:44,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994439339] [2022-01-31 19:31:44,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:44,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-01-31 19:31:44,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-01-31 19:31:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 19:31:44,914 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand has 139 states, 139 states have (on average 2.079136690647482) internal successors, (289), 138 states have internal predecessors, (289), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:31:51,552 INFO L93 Difference]: Finished difference Result 328 states and 336 transitions. [2022-01-31 19:31:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-31 19:31:51,552 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.079136690647482) internal successors, (289), 138 states have internal predecessors, (289), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 318 [2022-01-31 19:31:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:31:51,553 INFO L225 Difference]: With dead ends: 328 [2022-01-31 19:31:51,553 INFO L226 Difference]: Without dead ends: 304 [2022-01-31 19:31:51,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2022-01-31 19:31:51,557 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:31:51,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 67 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:31:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-31 19:31:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-01-31 19:31:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 295 states have (on average 1.0101694915254238) internal successors, (298), 295 states have internal predecessors, (298), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:31:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 307 transitions. [2022-01-31 19:31:51,694 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 307 transitions. Word has length 318 [2022-01-31 19:31:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:31:51,694 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 307 transitions. [2022-01-31 19:31:51,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.079136690647482) internal successors, (289), 138 states have internal predecessors, (289), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:31:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 307 transitions. [2022-01-31 19:31:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-31 19:31:51,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:31:51,695 INFO L514 BasicCegarLoop]: trace histogram [136, 136, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:31:51,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-31 19:31:51,695 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:31:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:31:51,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1852856184, now seen corresponding path program 136 times [2022-01-31 19:31:51,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:31:51,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657347277] [2022-01-31 19:31:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:31:51,696 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:31:51,697 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:31:51,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:31:51,707 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:31:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:57,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:31:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:57,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 19:31:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:31:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 19:31:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:31:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:31:57,149 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:31:57,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657347277] [2022-01-31 19:31:57,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [657347277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:31:57,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:31:57,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140 [2022-01-31 19:31:57,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403193424] [2022-01-31 19:31:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:31:57,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-01-31 19:31:57,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:31:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-01-31 19:31:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 19:31:57,152 INFO L87 Difference]: Start difference. First operand 303 states and 307 transitions. Second operand has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 139 states have internal predecessors, (291), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:32:03,829 INFO L93 Difference]: Finished difference Result 330 states and 338 transitions. [2022-01-31 19:32:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-31 19:32:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 139 states have internal predecessors, (291), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 320 [2022-01-31 19:32:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:32:03,830 INFO L225 Difference]: With dead ends: 330 [2022-01-31 19:32:03,830 INFO L226 Difference]: Without dead ends: 306 [2022-01-31 19:32:03,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452 [2022-01-31 19:32:03,833 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 293 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:32:03,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 47 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:32:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-31 19:32:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2022-01-31 19:32:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 297 states have (on average 1.0101010101010102) internal successors, (300), 297 states have internal predecessors, (300), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:32:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 309 transitions. [2022-01-31 19:32:03,956 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 309 transitions. Word has length 320 [2022-01-31 19:32:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:32:03,956 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 309 transitions. [2022-01-31 19:32:03,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 139 states have internal predecessors, (291), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 309 transitions. [2022-01-31 19:32:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-01-31 19:32:03,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:32:03,957 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:32:03,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-31 19:32:03,957 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:32:03,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:32:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1384412182, now seen corresponding path program 137 times [2022-01-31 19:32:03,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:32:03,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247606420] [2022-01-31 19:32:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:32:03,959 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:32:03,959 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:32:03,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:32:03,969 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:32:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:32:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 19:32:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 19:32:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 19:32:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:32:09,521 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:32:09,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247606420] [2022-01-31 19:32:09,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [247606420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:32:09,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:32:09,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141 [2022-01-31 19:32:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689151598] [2022-01-31 19:32:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:32:09,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-01-31 19:32:09,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:32:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-01-31 19:32:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 19:32:09,524 INFO L87 Difference]: Start difference. First operand 305 states and 309 transitions. Second operand has 141 states, 141 states have (on average 2.078014184397163) internal successors, (293), 140 states have internal predecessors, (293), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:32:16,298 INFO L93 Difference]: Finished difference Result 332 states and 340 transitions. [2022-01-31 19:32:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-31 19:32:16,298 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 2.078014184397163) internal successors, (293), 140 states have internal predecessors, (293), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 322 [2022-01-31 19:32:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:32:16,299 INFO L225 Difference]: With dead ends: 332 [2022-01-31 19:32:16,299 INFO L226 Difference]: Without dead ends: 308 [2022-01-31 19:32:16,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9590 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=29190, Invalid=48372, Unknown=0, NotChecked=0, Total=77562 [2022-01-31 19:32:16,303 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 295 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:32:16,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 62 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:32:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-31 19:32:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2022-01-31 19:32:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 299 states have (on average 1.0100334448160535) internal successors, (302), 299 states have internal predecessors, (302), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:32:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2022-01-31 19:32:16,418 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 322 [2022-01-31 19:32:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:32:16,419 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 311 transitions. [2022-01-31 19:32:16,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 2.078014184397163) internal successors, (293), 140 states have internal predecessors, (293), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 311 transitions. [2022-01-31 19:32:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-31 19:32:16,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:32:16,420 INFO L514 BasicCegarLoop]: trace histogram [138, 138, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:32:16,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-31 19:32:16,420 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:32:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:32:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2113674956, now seen corresponding path program 138 times [2022-01-31 19:32:16,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:32:16,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094914697] [2022-01-31 19:32:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:32:16,421 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:32:16,421 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:32:16,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:32:16,431 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:32:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:32:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 19:32:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:32:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 19:32:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:32:22,023 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:32:22,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094914697] [2022-01-31 19:32:22,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1094914697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:32:22,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:32:22,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [142] imperfect sequences [] total 142 [2022-01-31 19:32:22,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526720932] [2022-01-31 19:32:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:32:22,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2022-01-31 19:32:22,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:32:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2022-01-31 19:32:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 19:32:22,026 INFO L87 Difference]: Start difference. First operand 307 states and 311 transitions. Second operand has 142 states, 142 states have (on average 2.0774647887323945) internal successors, (295), 141 states have internal predecessors, (295), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:32:28,857 INFO L93 Difference]: Finished difference Result 334 states and 342 transitions. [2022-01-31 19:32:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-31 19:32:28,858 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.0774647887323945) internal successors, (295), 141 states have internal predecessors, (295), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 324 [2022-01-31 19:32:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:32:28,859 INFO L225 Difference]: With dead ends: 334 [2022-01-31 19:32:28,859 INFO L226 Difference]: Without dead ends: 310 [2022-01-31 19:32:28,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9729 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=29610, Invalid=49070, Unknown=0, NotChecked=0, Total=78680 [2022-01-31 19:32:28,864 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 297 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:32:28,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 57 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:32:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-31 19:32:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2022-01-31 19:32:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 301 states have (on average 1.0099667774086378) internal successors, (304), 301 states have internal predecessors, (304), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:32:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 313 transitions. [2022-01-31 19:32:29,002 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 313 transitions. Word has length 324 [2022-01-31 19:32:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:32:29,002 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 313 transitions. [2022-01-31 19:32:29,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.0774647887323945) internal successors, (295), 141 states have internal predecessors, (295), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 313 transitions. [2022-01-31 19:32:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-31 19:32:29,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:32:29,003 INFO L514 BasicCegarLoop]: trace histogram [139, 139, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:32:29,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-31 19:32:29,003 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:32:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:32:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash 816021806, now seen corresponding path program 139 times [2022-01-31 19:32:29,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:32:29,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016908661] [2022-01-31 19:32:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:32:29,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:32:29,004 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:32:29,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:32:29,015 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:32:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:32:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 19:32:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 19:32:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 19:32:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:32:34,695 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:32:34,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016908661] [2022-01-31 19:32:34,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1016908661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:32:34,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:32:34,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [143] imperfect sequences [] total 143 [2022-01-31 19:32:34,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869376405] [2022-01-31 19:32:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:32:34,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-01-31 19:32:34,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:32:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-01-31 19:32:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 19:32:34,699 INFO L87 Difference]: Start difference. First operand 309 states and 313 transitions. Second operand has 143 states, 143 states have (on average 2.076923076923077) internal successors, (297), 142 states have internal predecessors, (297), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:32:41,763 INFO L93 Difference]: Finished difference Result 336 states and 344 transitions. [2022-01-31 19:32:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-31 19:32:41,763 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.076923076923077) internal successors, (297), 142 states have internal predecessors, (297), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 326 [2022-01-31 19:32:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:32:41,764 INFO L225 Difference]: With dead ends: 336 [2022-01-31 19:32:41,764 INFO L226 Difference]: Without dead ends: 312 [2022-01-31 19:32:41,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2022-01-31 19:32:41,768 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 299 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:32:41,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 67 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:32:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-01-31 19:32:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2022-01-31 19:32:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 303 states have (on average 1.00990099009901) internal successors, (306), 303 states have internal predecessors, (306), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:32:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 315 transitions. [2022-01-31 19:32:41,907 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 315 transitions. Word has length 326 [2022-01-31 19:32:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:32:41,907 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 315 transitions. [2022-01-31 19:32:41,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.076923076923077) internal successors, (297), 142 states have internal predecessors, (297), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 315 transitions. [2022-01-31 19:32:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-01-31 19:32:41,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:32:41,908 INFO L514 BasicCegarLoop]: trace histogram [140, 140, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:32:41,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-31 19:32:41,909 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:32:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:32:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -688139504, now seen corresponding path program 140 times [2022-01-31 19:32:41,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:32:41,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536697662] [2022-01-31 19:32:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:32:41,910 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:32:41,910 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:32:41,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:32:41,921 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:32:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:32:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 19:32:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:32:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 19:32:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:32:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:32:47,741 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:32:47,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536697662] [2022-01-31 19:32:47,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1536697662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:32:47,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:32:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [144] imperfect sequences [] total 144 [2022-01-31 19:32:47,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333051133] [2022-01-31 19:32:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:32:47,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-01-31 19:32:47,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:32:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-01-31 19:32:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 19:32:47,745 INFO L87 Difference]: Start difference. First operand 311 states and 315 transitions. Second operand has 144 states, 144 states have (on average 2.076388888888889) internal successors, (299), 143 states have internal predecessors, (299), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:32:54,873 INFO L93 Difference]: Finished difference Result 338 states and 346 transitions. [2022-01-31 19:32:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-31 19:32:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 2.076388888888889) internal successors, (299), 143 states have internal predecessors, (299), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 328 [2022-01-31 19:32:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:32:54,874 INFO L225 Difference]: With dead ends: 338 [2022-01-31 19:32:54,874 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 19:32:54,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=30459, Invalid=50481, Unknown=0, NotChecked=0, Total=80940 [2022-01-31 19:32:54,877 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 301 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:32:54,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 47 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:32:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 19:32:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2022-01-31 19:32:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 305 states have (on average 1.0098360655737706) internal successors, (308), 305 states have internal predecessors, (308), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:32:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2022-01-31 19:32:55,000 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 328 [2022-01-31 19:32:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:32:55,000 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2022-01-31 19:32:55,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 2.076388888888889) internal successors, (299), 143 states have internal predecessors, (299), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:32:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2022-01-31 19:32:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-01-31 19:32:55,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:32:55,001 INFO L514 BasicCegarLoop]: trace histogram [141, 141, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:32:55,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-31 19:32:55,001 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:32:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:32:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1216820338, now seen corresponding path program 141 times [2022-01-31 19:32:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:32:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343183696] [2022-01-31 19:32:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:32:55,002 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:32:55,002 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:32:55,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:32:55,014 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:32:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:33:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 19:33:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 19:33:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 19:33:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:33:00,777 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:33:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343183696] [2022-01-31 19:33:00,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [343183696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:33:00,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:33:00,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [] total 145 [2022-01-31 19:33:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771256260] [2022-01-31 19:33:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:33:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-01-31 19:33:00,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:33:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-01-31 19:33:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 19:33:00,782 INFO L87 Difference]: Start difference. First operand 313 states and 317 transitions. Second operand has 145 states, 145 states have (on average 2.075862068965517) internal successors, (301), 144 states have internal predecessors, (301), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:33:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:33:07,640 INFO L93 Difference]: Finished difference Result 340 states and 348 transitions. [2022-01-31 19:33:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-31 19:33:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 2.075862068965517) internal successors, (301), 144 states have internal predecessors, (301), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 330 [2022-01-31 19:33:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:33:07,641 INFO L225 Difference]: With dead ends: 340 [2022-01-31 19:33:07,641 INFO L226 Difference]: Without dead ends: 316 [2022-01-31 19:33:07,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10152 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=30888, Invalid=51194, Unknown=0, NotChecked=0, Total=82082 [2022-01-31 19:33:07,646 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 303 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:33:07,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 52 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:33:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-01-31 19:33:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-01-31 19:33:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 307 states have (on average 1.009771986970684) internal successors, (310), 307 states have internal predecessors, (310), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:33:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 319 transitions. [2022-01-31 19:33:07,780 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 319 transitions. Word has length 330 [2022-01-31 19:33:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:33:07,780 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 319 transitions. [2022-01-31 19:33:07,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 2.075862068965517) internal successors, (301), 144 states have internal predecessors, (301), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:33:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 319 transitions. [2022-01-31 19:33:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-01-31 19:33:07,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:33:07,781 INFO L514 BasicCegarLoop]: trace histogram [142, 142, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:33:07,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-31 19:33:07,781 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:33:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:33:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2067806892, now seen corresponding path program 142 times [2022-01-31 19:33:07,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:33:07,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149983290] [2022-01-31 19:33:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:33:07,783 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:33:07,783 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:33:07,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:33:07,793 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:33:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:33:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 19:33:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:33:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 19:33:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:33:13,562 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:33:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149983290] [2022-01-31 19:33:13,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1149983290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:33:13,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:33:13,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [146] imperfect sequences [] total 146 [2022-01-31 19:33:13,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447504392] [2022-01-31 19:33:13,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:33:13,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-01-31 19:33:13,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:33:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-01-31 19:33:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 19:33:13,570 INFO L87 Difference]: Start difference. First operand 315 states and 319 transitions. Second operand has 146 states, 146 states have (on average 2.0753424657534247) internal successors, (303), 145 states have internal predecessors, (303), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:33:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:33:20,638 INFO L93 Difference]: Finished difference Result 342 states and 350 transitions. [2022-01-31 19:33:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-31 19:33:20,638 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.0753424657534247) internal successors, (303), 145 states have internal predecessors, (303), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 332 [2022-01-31 19:33:20,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:33:20,639 INFO L225 Difference]: With dead ends: 342 [2022-01-31 19:33:20,639 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 19:33:20,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10295 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=31320, Invalid=51912, Unknown=0, NotChecked=0, Total=83232 [2022-01-31 19:33:20,643 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 305 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:33:20,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 47 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:33:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 19:33:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-01-31 19:33:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 309 states have (on average 1.0097087378640777) internal successors, (312), 309 states have internal predecessors, (312), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:33:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2022-01-31 19:33:20,782 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 332 [2022-01-31 19:33:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:33:20,782 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2022-01-31 19:33:20,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.0753424657534247) internal successors, (303), 145 states have internal predecessors, (303), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 19:33:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2022-01-31 19:33:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-31 19:33:20,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:33:20,783 INFO L514 BasicCegarLoop]: trace histogram [143, 143, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:33:20,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-31 19:33:20,783 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:33:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:33:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1793612362, now seen corresponding path program 143 times [2022-01-31 19:33:20,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:33:20,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572942356] [2022-01-31 19:33:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:33:20,784 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:33:20,784 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:33:20,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:33:20,795 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:33:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:33:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 19:33:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 19:33:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 19:33:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:33:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 19:33:26,592 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:33:26,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572942356] [2022-01-31 19:33:26,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [572942356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:33:26,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:33:26,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [147] imperfect sequences [] total 147 [2022-01-31 19:33:26,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144069361] [2022-01-31 19:33:26,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:33:26,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-01-31 19:33:26,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:33:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-01-31 19:33:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 19:33:26,596 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand has 147 states, 147 states have (on average 2.074829931972789) internal successors, (305), 146 states have internal predecessors, (305), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)