/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:55:37,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:55:37,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:55:37,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:55:37,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:55:37,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:55:37,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:55:37,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:55:37,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:55:37,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:55:37,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:55:37,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:55:37,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:55:37,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:55:37,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:55:37,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:55:37,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:55:37,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:55:37,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:55:37,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:55:37,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:55:37,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:55:37,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:55:37,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:55:37,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:55:37,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:55:37,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:55:37,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:55:37,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:55:37,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:55:37,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:55:37,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:55:37,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:55:37,274 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:55:37,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:55:37,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:55:37,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:55:37,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:55:37,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:55:37,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:55:37,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:55:37,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:55:37,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:55:37,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:55:37,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:55:37,748 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:55:37,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-10-24 00:55:37,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026dc8a66/22cf074047c84b928a2fee3c7a2191e9/FLAGa207efce3 [2020-10-24 00:55:38,495 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:55:38,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-10-24 00:55:38,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026dc8a66/22cf074047c84b928a2fee3c7a2191e9/FLAGa207efce3 [2020-10-24 00:55:38,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026dc8a66/22cf074047c84b928a2fee3c7a2191e9 [2020-10-24 00:55:38,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:55:38,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:55:38,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:55:38,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:55:38,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:55:38,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:55:38" (1/1) ... [2020-10-24 00:55:38,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44de4859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:38, skipping insertion in model container [2020-10-24 00:55:38,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:55:38" (1/1) ... [2020-10-24 00:55:38,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:55:38,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:55:39,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:55:39,095 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:55:39,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:55:39,128 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:55:39,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39 WrapperNode [2020-10-24 00:55:39,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:55:39,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:55:39,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:55:39,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:55:39,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... [2020-10-24 00:55:39,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:55:39,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:55:39,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:55:39,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:55:39,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:55:39,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:55:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:55:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:55:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-24 00:55:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:55:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-24 00:55:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:55:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:55:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:55:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:55:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-24 00:55:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:55:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:55:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:55:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:55:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:55:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:55:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:55:39,491 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:55:39,491 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:55:39,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:39 BoogieIcfgContainer [2020-10-24 00:55:39,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:55:39,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:55:39,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:55:39,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:55:39,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:55:38" (1/3) ... [2020-10-24 00:55:39,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b50c99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:39, skipping insertion in model container [2020-10-24 00:55:39,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:39" (2/3) ... [2020-10-24 00:55:39,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b50c99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:39, skipping insertion in model container [2020-10-24 00:55:39,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:39" (3/3) ... [2020-10-24 00:55:39,517 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-10-24 00:55:39,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:55:39,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:55:39,558 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:55:39,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:55:39,590 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:55:39,590 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:55:39,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:55:39,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:55:39,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:55:39,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:55:39,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:55:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-24 00:55:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 00:55:39,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:39,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:39,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:39,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2039876327, now seen corresponding path program 1 times [2020-10-24 00:55:39,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:39,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744389797] [2020-10-24 00:55:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:55:40,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744389797] [2020-10-24 00:55:40,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:55:40,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 00:55:40,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836441434] [2020-10-24 00:55:40,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 00:55:40,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:40,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 00:55:40,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:55:40,132 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-10-24 00:55:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:40,600 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-24 00:55:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:55:40,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-24 00:55:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:40,621 INFO L225 Difference]: With dead ends: 50 [2020-10-24 00:55:40,622 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 00:55:40,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:55:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 00:55:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-24 00:55:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 00:55:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-24 00:55:40,724 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-10-24 00:55:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:40,726 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-24 00:55:40,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 00:55:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-24 00:55:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 00:55:40,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:40,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:40,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:55:40,731 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1789799325, now seen corresponding path program 1 times [2020-10-24 00:55:40,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:40,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123853325] [2020-10-24 00:55:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-24 00:55:40,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123853325] [2020-10-24 00:55:40,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:40,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 00:55:40,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146415867] [2020-10-24 00:55:40,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 00:55:40,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:40,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 00:55:40,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 00:55:40,977 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-10-24 00:55:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:41,431 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-10-24 00:55:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:55:41,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-24 00:55:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:41,434 INFO L225 Difference]: With dead ends: 41 [2020-10-24 00:55:41,435 INFO L226 Difference]: Without dead ends: 35 [2020-10-24 00:55:41,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-24 00:55:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-24 00:55:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-24 00:55:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-24 00:55:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-24 00:55:41,465 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-10-24 00:55:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:41,468 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-24 00:55:41,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 00:55:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-24 00:55:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 00:55:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:41,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:41,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:55:41,473 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:41,473 INFO L82 PathProgramCache]: Analyzing trace with hash 819538851, now seen corresponding path program 2 times [2020-10-24 00:55:41,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:41,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160993845] [2020-10-24 00:55:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-24 00:55:41,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160993845] [2020-10-24 00:55:41,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:41,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:55:41,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757291355] [2020-10-24 00:55:41,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:55:41,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:41,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:55:41,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:55:41,755 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-10-24 00:55:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:42,264 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-10-24 00:55:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 00:55:42,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-24 00:55:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:42,266 INFO L225 Difference]: With dead ends: 45 [2020-10-24 00:55:42,267 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 00:55:42,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-24 00:55:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 00:55:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-24 00:55:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-24 00:55:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-24 00:55:42,280 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 39 [2020-10-24 00:55:42,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:42,281 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-24 00:55:42,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:55:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-24 00:55:42,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 00:55:42,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:42,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1] [2020-10-24 00:55:42,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:55:42,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:42,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:42,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1214666029, now seen corresponding path program 3 times [2020-10-24 00:55:42,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:42,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535586702] [2020-10-24 00:55:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:42,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-24 00:55:42,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535586702] [2020-10-24 00:55:42,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:42,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 00:55:42,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86511070] [2020-10-24 00:55:42,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 00:55:42,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:42,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 00:55:42,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-24 00:55:42,594 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 12 states. [2020-10-24 00:55:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:43,471 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-24 00:55:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 00:55:43,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-24 00:55:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:43,475 INFO L225 Difference]: With dead ends: 49 [2020-10-24 00:55:43,475 INFO L226 Difference]: Without dead ends: 43 [2020-10-24 00:55:43,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-24 00:55:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-24 00:55:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-24 00:55:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-24 00:55:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-24 00:55:43,490 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 46 [2020-10-24 00:55:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:43,491 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-24 00:55:43,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 00:55:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-24 00:55:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 00:55:43,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:43,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:43,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 00:55:43,498 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash -461443027, now seen corresponding path program 4 times [2020-10-24 00:55:43,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:43,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666641036] [2020-10-24 00:55:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-24 00:55:43,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666641036] [2020-10-24 00:55:43,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:43,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 00:55:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551426865] [2020-10-24 00:55:43,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 00:55:43,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 00:55:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-24 00:55:43,921 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 14 states. [2020-10-24 00:55:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:45,022 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-10-24 00:55:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 00:55:45,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-24 00:55:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:45,027 INFO L225 Difference]: With dead ends: 53 [2020-10-24 00:55:45,028 INFO L226 Difference]: Without dead ends: 47 [2020-10-24 00:55:45,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-10-24 00:55:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-24 00:55:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-24 00:55:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 00:55:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-24 00:55:45,059 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 53 [2020-10-24 00:55:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:45,059 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-24 00:55:45,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 00:55:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-24 00:55:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-24 00:55:45,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:45,063 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:45,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 00:55:45,064 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:45,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:45,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1951577079, now seen corresponding path program 5 times [2020-10-24 00:55:45,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:45,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725917979] [2020-10-24 00:55:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 00:55:45,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725917979] [2020-10-24 00:55:45,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:45,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 00:55:45,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308944076] [2020-10-24 00:55:45,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 00:55:45,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 00:55:45,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:55:45,479 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-10-24 00:55:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:46,852 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-10-24 00:55:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 00:55:46,853 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-24 00:55:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:46,856 INFO L225 Difference]: With dead ends: 57 [2020-10-24 00:55:46,856 INFO L226 Difference]: Without dead ends: 51 [2020-10-24 00:55:46,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 00:55:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-24 00:55:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-24 00:55:46,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-24 00:55:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-10-24 00:55:46,871 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 60 [2020-10-24 00:55:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:46,871 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-10-24 00:55:46,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 00:55:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-10-24 00:55:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-24 00:55:46,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:46,873 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:46,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 00:55:46,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:46,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1085586761, now seen corresponding path program 6 times [2020-10-24 00:55:46,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:46,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870446504] [2020-10-24 00:55:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-24 00:55:47,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870446504] [2020-10-24 00:55:47,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:47,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 00:55:47,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483892537] [2020-10-24 00:55:47,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 00:55:47,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 00:55:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-24 00:55:47,398 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-10-24 00:55:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:48,980 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-10-24 00:55:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 00:55:48,982 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-10-24 00:55:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:48,984 INFO L225 Difference]: With dead ends: 61 [2020-10-24 00:55:48,984 INFO L226 Difference]: Without dead ends: 55 [2020-10-24 00:55:48,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 00:55:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-24 00:55:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-24 00:55:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-24 00:55:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-10-24 00:55:49,012 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 67 [2020-10-24 00:55:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:49,013 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-10-24 00:55:49,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 00:55:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-10-24 00:55:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-24 00:55:49,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:49,015 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:49,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 00:55:49,015 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1506086719, now seen corresponding path program 7 times [2020-10-24 00:55:49,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:49,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582325965] [2020-10-24 00:55:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-24 00:55:49,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582325965] [2020-10-24 00:55:49,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:49,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-24 00:55:49,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278492748] [2020-10-24 00:55:49,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 00:55:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:49,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 00:55:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-24 00:55:49,571 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 20 states. [2020-10-24 00:55:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:51,527 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-10-24 00:55:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 00:55:51,528 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-24 00:55:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:51,529 INFO L225 Difference]: With dead ends: 65 [2020-10-24 00:55:51,530 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 00:55:51,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2020-10-24 00:55:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 00:55:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-24 00:55:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 00:55:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-24 00:55:51,546 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 74 [2020-10-24 00:55:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:51,546 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-24 00:55:51,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-24 00:55:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-24 00:55:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-24 00:55:51,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:51,549 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:51,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 00:55:51,549 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1924014913, now seen corresponding path program 8 times [2020-10-24 00:55:51,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:51,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723687016] [2020-10-24 00:55:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:51,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:51,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-24 00:55:52,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723687016] [2020-10-24 00:55:52,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:52,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 00:55:52,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615208236] [2020-10-24 00:55:52,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 00:55:52,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:52,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 00:55:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-24 00:55:52,337 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 22 states. [2020-10-24 00:55:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:54,645 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-10-24 00:55:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-24 00:55:54,646 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-10-24 00:55:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:54,648 INFO L225 Difference]: With dead ends: 69 [2020-10-24 00:55:54,648 INFO L226 Difference]: Without dead ends: 63 [2020-10-24 00:55:54,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=2270, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 00:55:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-24 00:55:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-24 00:55:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-24 00:55:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-10-24 00:55:54,669 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 81 [2020-10-24 00:55:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:54,669 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-10-24 00:55:54,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 00:55:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-10-24 00:55:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-24 00:55:54,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:54,674 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:54,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 00:55:54,675 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:54,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:54,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1815934069, now seen corresponding path program 9 times [2020-10-24 00:55:54,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:54,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900381293] [2020-10-24 00:55:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-24 00:55:55,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900381293] [2020-10-24 00:55:55,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:55,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-24 00:55:55,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111881164] [2020-10-24 00:55:55,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-24 00:55:55,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-24 00:55:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-24 00:55:55,512 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 24 states. [2020-10-24 00:55:58,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:58,180 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-10-24 00:55:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-24 00:55:58,181 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 88 [2020-10-24 00:55:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:58,183 INFO L225 Difference]: With dead ends: 73 [2020-10-24 00:55:58,183 INFO L226 Difference]: Without dead ends: 67 [2020-10-24 00:55:58,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2020-10-24 00:55:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-24 00:55:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-24 00:55:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-24 00:55:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-24 00:55:58,199 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 88 [2020-10-24 00:55:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:58,199 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-24 00:55:58,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-24 00:55:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-24 00:55:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-24 00:55:58,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:58,201 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:58,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 00:55:58,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:58,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1550347829, now seen corresponding path program 10 times [2020-10-24 00:55:58,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:58,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240147073] [2020-10-24 00:55:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:59,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-24 00:55:59,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240147073] [2020-10-24 00:55:59,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:59,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-24 00:55:59,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147381162] [2020-10-24 00:55:59,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-24 00:55:59,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:59,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-24 00:55:59,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-24 00:55:59,179 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 26 states. [2020-10-24 00:56:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:02,253 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-10-24 00:56:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 00:56:02,254 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 95 [2020-10-24 00:56:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:02,255 INFO L225 Difference]: With dead ends: 77 [2020-10-24 00:56:02,256 INFO L226 Difference]: Without dead ends: 71 [2020-10-24 00:56:02,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 00:56:02,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-24 00:56:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-24 00:56:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-24 00:56:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-24 00:56:02,274 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 95 [2020-10-24 00:56:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:02,275 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-24 00:56:02,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-24 00:56:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-24 00:56:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-24 00:56:02,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:02,277 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:02,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 00:56:02,277 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1156643755, now seen corresponding path program 11 times [2020-10-24 00:56:02,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:02,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991601297] [2020-10-24 00:56:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-24 00:56:03,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991601297] [2020-10-24 00:56:03,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:03,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-24 00:56:03,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001375773] [2020-10-24 00:56:03,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-24 00:56:03,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-24 00:56:03,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-24 00:56:03,421 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 28 states. [2020-10-24 00:56:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:06,929 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-10-24 00:56:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-24 00:56:06,930 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-10-24 00:56:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:06,932 INFO L225 Difference]: With dead ends: 81 [2020-10-24 00:56:06,932 INFO L226 Difference]: Without dead ends: 75 [2020-10-24 00:56:06,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2020-10-24 00:56:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-24 00:56:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-24 00:56:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 00:56:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-10-24 00:56:06,948 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 102 [2020-10-24 00:56:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-10-24 00:56:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-24 00:56:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-10-24 00:56:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-24 00:56:06,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:06,950 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:06,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 00:56:06,951 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1249349205, now seen corresponding path program 12 times [2020-10-24 00:56:06,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:06,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492625014] [2020-10-24 00:56:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-24 00:56:08,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492625014] [2020-10-24 00:56:08,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:08,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-24 00:56:08,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118368505] [2020-10-24 00:56:08,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-24 00:56:08,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-24 00:56:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-24 00:56:08,250 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 30 states. [2020-10-24 00:56:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:12,161 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-24 00:56:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-24 00:56:12,162 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 109 [2020-10-24 00:56:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:12,164 INFO L225 Difference]: With dead ends: 85 [2020-10-24 00:56:12,164 INFO L226 Difference]: Without dead ends: 79 [2020-10-24 00:56:12,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 00:56:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-24 00:56:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-24 00:56:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-24 00:56:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-24 00:56:12,180 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 109 [2020-10-24 00:56:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:12,181 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-24 00:56:12,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-24 00:56:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-24 00:56:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-24 00:56:12,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:12,182 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:12,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 00:56:12,183 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:12,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:12,183 INFO L82 PathProgramCache]: Analyzing trace with hash 46324511, now seen corresponding path program 13 times [2020-10-24 00:56:12,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:12,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167701262] [2020-10-24 00:56:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-24 00:56:13,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167701262] [2020-10-24 00:56:13,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:13,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-24 00:56:13,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944264659] [2020-10-24 00:56:13,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-24 00:56:13,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:13,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-24 00:56:13,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-24 00:56:13,474 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 32 states. [2020-10-24 00:56:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:17,889 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-10-24 00:56:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-24 00:56:17,890 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2020-10-24 00:56:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:17,895 INFO L225 Difference]: With dead ends: 89 [2020-10-24 00:56:17,895 INFO L226 Difference]: Without dead ends: 83 [2020-10-24 00:56:17,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=275, Invalid=5275, Unknown=0, NotChecked=0, Total=5550 [2020-10-24 00:56:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-24 00:56:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-24 00:56:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-24 00:56:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-10-24 00:56:17,920 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2020-10-24 00:56:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:17,921 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-10-24 00:56:17,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-24 00:56:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-10-24 00:56:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-24 00:56:17,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:17,923 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:17,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 00:56:17,923 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:17,923 INFO L82 PathProgramCache]: Analyzing trace with hash 322836703, now seen corresponding path program 14 times [2020-10-24 00:56:17,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:17,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678982298] [2020-10-24 00:56:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-24 00:56:19,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678982298] [2020-10-24 00:56:19,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:19,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-24 00:56:19,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895215522] [2020-10-24 00:56:19,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-24 00:56:19,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:19,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-24 00:56:19,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 00:56:19,336 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 34 states. [2020-10-24 00:56:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:24,290 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-10-24 00:56:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-24 00:56:24,291 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 123 [2020-10-24 00:56:24,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:24,293 INFO L225 Difference]: With dead ends: 93 [2020-10-24 00:56:24,293 INFO L226 Difference]: Without dead ends: 87 [2020-10-24 00:56:24,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=294, Invalid=6026, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 00:56:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-24 00:56:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-24 00:56:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-24 00:56:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-10-24 00:56:24,307 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 123 [2020-10-24 00:56:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:24,308 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-10-24 00:56:24,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-24 00:56:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-10-24 00:56:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-24 00:56:24,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:24,310 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:24,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 00:56:24,310 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117353, now seen corresponding path program 15 times [2020-10-24 00:56:24,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:24,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60620664] [2020-10-24 00:56:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-24 00:56:25,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60620664] [2020-10-24 00:56:25,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:25,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-24 00:56:25,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839760453] [2020-10-24 00:56:25,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-24 00:56:25,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-24 00:56:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 00:56:25,826 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 36 states. [2020-10-24 00:56:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:31,286 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-10-24 00:56:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-24 00:56:31,287 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 130 [2020-10-24 00:56:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:31,289 INFO L225 Difference]: With dead ends: 97 [2020-10-24 00:56:31,290 INFO L226 Difference]: Without dead ends: 91 [2020-10-24 00:56:31,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=313, Invalid=6827, Unknown=0, NotChecked=0, Total=7140 [2020-10-24 00:56:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-24 00:56:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-24 00:56:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-24 00:56:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-24 00:56:31,305 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 130 [2020-10-24 00:56:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:31,306 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-24 00:56:31,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-24 00:56:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-24 00:56:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-24 00:56:31,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:31,308 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:31,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 00:56:31,308 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1118097047, now seen corresponding path program 16 times [2020-10-24 00:56:31,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:31,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052750956] [2020-10-24 00:56:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-24 00:56:33,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052750956] [2020-10-24 00:56:33,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:33,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-24 00:56:33,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638421586] [2020-10-24 00:56:33,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-24 00:56:33,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-24 00:56:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 00:56:33,067 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 38 states. [2020-10-24 00:56:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:39,087 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-10-24 00:56:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-24 00:56:39,088 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 137 [2020-10-24 00:56:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:39,091 INFO L225 Difference]: With dead ends: 101 [2020-10-24 00:56:39,091 INFO L226 Difference]: Without dead ends: 95 [2020-10-24 00:56:39,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=332, Invalid=7678, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 00:56:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-24 00:56:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-24 00:56:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-24 00:56:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-24 00:56:39,107 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 137 [2020-10-24 00:56:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:39,107 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-24 00:56:39,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-24 00:56:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-24 00:56:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-24 00:56:39,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:39,109 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:39,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 00:56:39,109 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1483874995, now seen corresponding path program 17 times [2020-10-24 00:56:39,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:39,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251094699] [2020-10-24 00:56:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-24 00:56:41,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251094699] [2020-10-24 00:56:41,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:41,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-24 00:56:41,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748844788] [2020-10-24 00:56:41,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-24 00:56:41,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:41,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-24 00:56:41,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 00:56:41,160 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 40 states. [2020-10-24 00:56:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:47,600 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-10-24 00:56:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-24 00:56:47,605 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2020-10-24 00:56:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:47,607 INFO L225 Difference]: With dead ends: 105 [2020-10-24 00:56:47,607 INFO L226 Difference]: Without dead ends: 99 [2020-10-24 00:56:47,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=351, Invalid=8579, Unknown=0, NotChecked=0, Total=8930 [2020-10-24 00:56:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-24 00:56:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-24 00:56:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-24 00:56:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-10-24 00:56:47,624 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 144 [2020-10-24 00:56:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:47,624 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-10-24 00:56:47,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-24 00:56:47,624 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-10-24 00:56:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-24 00:56:47,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:47,626 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:47,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-24 00:56:47,626 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:47,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:47,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2076104691, now seen corresponding path program 18 times [2020-10-24 00:56:47,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:47,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931556516] [2020-10-24 00:56:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:49,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-24 00:56:49,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931556516] [2020-10-24 00:56:49,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:49,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-24 00:56:49,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805009149] [2020-10-24 00:56:49,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-24 00:56:49,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:49,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-24 00:56:49,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 00:56:49,735 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 42 states. [2020-10-24 00:56:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:56,993 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-10-24 00:56:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-24 00:56:56,994 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 151 [2020-10-24 00:56:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:56,996 INFO L225 Difference]: With dead ends: 109 [2020-10-24 00:56:56,996 INFO L226 Difference]: Without dead ends: 103 [2020-10-24 00:56:56,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=370, Invalid=9530, Unknown=0, NotChecked=0, Total=9900 [2020-10-24 00:56:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-24 00:56:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-24 00:56:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-24 00:56:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-24 00:56:57,011 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 151 [2020-10-24 00:56:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:57,012 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-24 00:56:57,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-24 00:56:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-24 00:56:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-24 00:56:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:57,013 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:57,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-24 00:56:57,014 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash -566914179, now seen corresponding path program 19 times [2020-10-24 00:56:57,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:57,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5120326] [2020-10-24 00:56:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:59,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-24 00:56:59,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5120326] [2020-10-24 00:56:59,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:59,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-24 00:56:59,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435844689] [2020-10-24 00:56:59,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-24 00:56:59,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:59,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-24 00:56:59,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 00:56:59,421 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 44 states. [2020-10-24 00:57:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:07,483 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2020-10-24 00:57:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-24 00:57:07,484 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 158 [2020-10-24 00:57:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:07,486 INFO L225 Difference]: With dead ends: 113 [2020-10-24 00:57:07,486 INFO L226 Difference]: Without dead ends: 107 [2020-10-24 00:57:07,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=389, Invalid=10531, Unknown=0, NotChecked=0, Total=10920 [2020-10-24 00:57:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-24 00:57:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-24 00:57:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-24 00:57:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-10-24 00:57:07,503 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 158 [2020-10-24 00:57:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:07,503 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-10-24 00:57:07,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-24 00:57:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-10-24 00:57:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-24 00:57:07,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:07,505 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:07,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-24 00:57:07,505 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:07,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1423510653, now seen corresponding path program 20 times [2020-10-24 00:57:07,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:07,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283173129] [2020-10-24 00:57:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:07,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-24 00:57:10,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283173129] [2020-10-24 00:57:10,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:10,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-24 00:57:10,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222370994] [2020-10-24 00:57:10,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-24 00:57:10,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:10,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-24 00:57:10,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-10-24 00:57:10,147 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 46 states. [2020-10-24 00:57:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:19,035 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-10-24 00:57:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-24 00:57:19,037 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 165 [2020-10-24 00:57:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:19,039 INFO L225 Difference]: With dead ends: 117 [2020-10-24 00:57:19,039 INFO L226 Difference]: Without dead ends: 111 [2020-10-24 00:57:19,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=408, Invalid=11582, Unknown=0, NotChecked=0, Total=11990 [2020-10-24 00:57:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-24 00:57:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-24 00:57:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-24 00:57:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-10-24 00:57:19,056 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 165 [2020-10-24 00:57:19,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:19,057 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-10-24 00:57:19,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-24 00:57:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-10-24 00:57:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-24 00:57:19,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:19,059 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:19,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-24 00:57:19,059 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:19,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1276059065, now seen corresponding path program 21 times [2020-10-24 00:57:19,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:19,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770615900] [2020-10-24 00:57:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-24 00:57:22,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770615900] [2020-10-24 00:57:22,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:22,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-24 00:57:22,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556993641] [2020-10-24 00:57:22,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-24 00:57:22,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:22,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-24 00:57:22,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 00:57:22,107 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 48 states. [2020-10-24 00:57:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:31,339 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-10-24 00:57:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-24 00:57:31,344 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 172 [2020-10-24 00:57:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:31,345 INFO L225 Difference]: With dead ends: 121 [2020-10-24 00:57:31,345 INFO L226 Difference]: Without dead ends: 115 [2020-10-24 00:57:31,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=427, Invalid=12683, Unknown=0, NotChecked=0, Total=13110 [2020-10-24 00:57:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-24 00:57:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-24 00:57:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-24 00:57:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-24 00:57:31,363 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 172 [2020-10-24 00:57:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:31,363 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-24 00:57:31,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-24 00:57:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-24 00:57:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-24 00:57:31,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:31,365 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:31,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-24 00:57:31,366 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2103849209, now seen corresponding path program 22 times [2020-10-24 00:57:31,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:31,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839456703] [2020-10-24 00:57:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-24 00:57:34,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839456703] [2020-10-24 00:57:34,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:34,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-24 00:57:34,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172102411] [2020-10-24 00:57:34,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-24 00:57:34,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:34,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-24 00:57:34,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 00:57:34,538 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 50 states. [2020-10-24 00:57:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:44,394 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2020-10-24 00:57:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-24 00:57:44,395 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 179 [2020-10-24 00:57:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:44,398 INFO L225 Difference]: With dead ends: 125 [2020-10-24 00:57:44,398 INFO L226 Difference]: Without dead ends: 119 [2020-10-24 00:57:44,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=446, Invalid=13834, Unknown=0, NotChecked=0, Total=14280 [2020-10-24 00:57:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-24 00:57:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-24 00:57:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-24 00:57:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-10-24 00:57:44,416 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 179 [2020-10-24 00:57:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:44,417 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-10-24 00:57:44,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-24 00:57:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-10-24 00:57:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-24 00:57:44,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:44,418 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:44,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-24 00:57:44,419 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash 717754129, now seen corresponding path program 23 times [2020-10-24 00:57:44,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:44,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532170844] [2020-10-24 00:57:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-24 00:57:47,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532170844] [2020-10-24 00:57:47,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:47,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-24 00:57:47,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605492747] [2020-10-24 00:57:47,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-24 00:57:47,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:47,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-24 00:57:47,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 00:57:47,731 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 52 states. [2020-10-24 00:57:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:58,425 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-10-24 00:57:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-24 00:57:58,426 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 186 [2020-10-24 00:57:58,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:58,428 INFO L225 Difference]: With dead ends: 129 [2020-10-24 00:57:58,428 INFO L226 Difference]: Without dead ends: 123 [2020-10-24 00:57:58,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=465, Invalid=15035, Unknown=0, NotChecked=0, Total=15500 [2020-10-24 00:57:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-24 00:57:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-24 00:57:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-24 00:57:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-10-24 00:57:58,446 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 186 [2020-10-24 00:57:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:58,447 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-10-24 00:57:58,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-24 00:57:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-10-24 00:57:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-24 00:57:58,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:58,448 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:58,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-24 00:57:58,449 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash -764338287, now seen corresponding path program 24 times [2020-10-24 00:57:58,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:58,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330295185] [2020-10-24 00:57:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:00,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-24 00:58:02,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330295185] [2020-10-24 00:58:02,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:02,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-24 00:58:02,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153767888] [2020-10-24 00:58:02,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-24 00:58:02,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:02,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-24 00:58:02,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2020-10-24 00:58:02,169 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 54 states. [2020-10-24 00:58:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:13,671 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2020-10-24 00:58:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-24 00:58:13,672 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 193 [2020-10-24 00:58:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:13,674 INFO L225 Difference]: With dead ends: 133 [2020-10-24 00:58:13,674 INFO L226 Difference]: Without dead ends: 127 [2020-10-24 00:58:13,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=484, Invalid=16286, Unknown=0, NotChecked=0, Total=16770 [2020-10-24 00:58:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-24 00:58:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-10-24 00:58:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-24 00:58:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-24 00:58:13,692 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 193 [2020-10-24 00:58:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:13,692 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-24 00:58:13,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-24 00:58:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-24 00:58:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-24 00:58:13,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:13,694 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:13,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-24 00:58:13,694 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1134618149, now seen corresponding path program 25 times [2020-10-24 00:58:13,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:13,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334005180] [2020-10-24 00:58:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:13,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:16,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:16,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-24 00:58:17,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334005180] [2020-10-24 00:58:17,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:17,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-24 00:58:17,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473673733] [2020-10-24 00:58:17,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-24 00:58:17,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:17,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-24 00:58:17,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2020-10-24 00:58:17,579 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 56 states. [2020-10-24 00:58:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:30,302 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-10-24 00:58:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-24 00:58:30,303 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 200 [2020-10-24 00:58:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:30,304 INFO L225 Difference]: With dead ends: 137 [2020-10-24 00:58:30,305 INFO L226 Difference]: Without dead ends: 131 [2020-10-24 00:58:30,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=503, Invalid=17587, Unknown=0, NotChecked=0, Total=18090 [2020-10-24 00:58:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-24 00:58:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-24 00:58:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-24 00:58:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-10-24 00:58:30,325 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 200 [2020-10-24 00:58:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:30,326 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-10-24 00:58:30,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-24 00:58:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-10-24 00:58:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-24 00:58:30,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:30,328 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:30,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-24 00:58:30,328 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash 89062939, now seen corresponding path program 26 times [2020-10-24 00:58:30,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:30,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546362572] [2020-10-24 00:58:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:30,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:31,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:33,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-24 00:58:34,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546362572] [2020-10-24 00:58:34,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:34,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-24 00:58:34,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632355256] [2020-10-24 00:58:34,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-24 00:58:34,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:34,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-24 00:58:34,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 00:58:34,919 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 58 states. [2020-10-24 00:58:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:49,465 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-10-24 00:58:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-24 00:58:49,466 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 207 [2020-10-24 00:58:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:49,468 INFO L225 Difference]: With dead ends: 141 [2020-10-24 00:58:49,469 INFO L226 Difference]: Without dead ends: 135 [2020-10-24 00:58:49,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=522, Invalid=18938, Unknown=0, NotChecked=0, Total=19460 [2020-10-24 00:58:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-24 00:58:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-24 00:58:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-24 00:58:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-10-24 00:58:49,485 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 207 [2020-10-24 00:58:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:49,486 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-10-24 00:58:49,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-24 00:58:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-10-24 00:58:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-24 00:58:49,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:49,488 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:49,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-24 00:58:49,488 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1428553051, now seen corresponding path program 27 times [2020-10-24 00:58:49,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:49,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723987785] [2020-10-24 00:58:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:49,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:51,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-24 00:58:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723987785] [2020-10-24 00:58:54,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:54,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-24 00:58:54,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345290339] [2020-10-24 00:58:54,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-24 00:58:54,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-24 00:58:54,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 00:58:54,379 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 60 states. [2020-10-24 00:59:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:09,711 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2020-10-24 00:59:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-24 00:59:09,712 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 214 [2020-10-24 00:59:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:09,714 INFO L225 Difference]: With dead ends: 145 [2020-10-24 00:59:09,714 INFO L226 Difference]: Without dead ends: 139 [2020-10-24 00:59:09,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3542 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=541, Invalid=20339, Unknown=0, NotChecked=0, Total=20880 [2020-10-24 00:59:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-24 00:59:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-10-24 00:59:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-24 00:59:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-10-24 00:59:09,733 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 214 [2020-10-24 00:59:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:09,734 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-10-24 00:59:09,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-24 00:59:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-10-24 00:59:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-24 00:59:09,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:09,735 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:09,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-24 00:59:09,736 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:09,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:09,736 INFO L82 PathProgramCache]: Analyzing trace with hash 799238821, now seen corresponding path program 28 times [2020-10-24 00:59:09,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:09,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457482370] [2020-10-24 00:59:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:09,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:59:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:09,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:12,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:13,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-24 00:59:14,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457482370] [2020-10-24 00:59:14,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:59:14,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-24 00:59:14,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942362716] [2020-10-24 00:59:14,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-24 00:59:14,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:14,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-24 00:59:14,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2020-10-24 00:59:14,957 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 62 states. [2020-10-24 00:59:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:31,446 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2020-10-24 00:59:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-24 00:59:31,447 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 221 [2020-10-24 00:59:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:31,450 INFO L225 Difference]: With dead ends: 149 [2020-10-24 00:59:31,450 INFO L226 Difference]: Without dead ends: 143 [2020-10-24 00:59:31,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=560, Invalid=21790, Unknown=0, NotChecked=0, Total=22350 [2020-10-24 00:59:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-24 00:59:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-24 00:59:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-24 00:59:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-10-24 00:59:31,483 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 221 [2020-10-24 00:59:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:31,483 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-10-24 00:59:31,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-24 00:59:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-10-24 00:59:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-24 00:59:31,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:31,485 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:31,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-24 00:59:31,486 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1596143249, now seen corresponding path program 29 times [2020-10-24 00:59:31,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:31,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070986478] [2020-10-24 00:59:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:59:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:34,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-24 00:59:37,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070986478] [2020-10-24 00:59:37,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:59:37,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-24 00:59:37,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182384221] [2020-10-24 00:59:37,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-24 00:59:37,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:37,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-24 00:59:37,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2020-10-24 00:59:37,200 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 64 states. [2020-10-24 00:59:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:54,818 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2020-10-24 00:59:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-24 00:59:54,819 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 228 [2020-10-24 00:59:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:54,820 INFO L225 Difference]: With dead ends: 153 [2020-10-24 00:59:54,820 INFO L226 Difference]: Without dead ends: 147 [2020-10-24 00:59:54,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4065 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=579, Invalid=23291, Unknown=0, NotChecked=0, Total=23870 [2020-10-24 00:59:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-24 00:59:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-24 00:59:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-24 00:59:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-10-24 00:59:54,838 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 228 [2020-10-24 00:59:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:54,839 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-10-24 00:59:54,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-24 00:59:54,839 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-10-24 00:59:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-24 00:59:54,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:54,840 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:54,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-24 00:59:54,841 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:54,842 INFO L82 PathProgramCache]: Analyzing trace with hash 425616687, now seen corresponding path program 30 times [2020-10-24 00:59:54,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:54,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062548548] [2020-10-24 00:59:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:59:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:57,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:58,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:59,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:59,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-24 01:00:00,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062548548] [2020-10-24 01:00:00,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:00:00,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-24 01:00:00,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463538014] [2020-10-24 01:00:00,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-24 01:00:00,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:00:00,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-24 01:00:00,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2020-10-24 01:00:00,958 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 66 states. [2020-10-24 01:00:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:00:19,848 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-10-24 01:00:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-24 01:00:19,850 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 235 [2020-10-24 01:00:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:00:19,851 INFO L225 Difference]: With dead ends: 157 [2020-10-24 01:00:19,852 INFO L226 Difference]: Without dead ends: 151 [2020-10-24 01:00:19,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=598, Invalid=24842, Unknown=0, NotChecked=0, Total=25440 [2020-10-24 01:00:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-24 01:00:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-24 01:00:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-24 01:00:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-10-24 01:00:19,872 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 235 [2020-10-24 01:00:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:00:19,873 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-10-24 01:00:19,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-24 01:00:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-10-24 01:00:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-24 01:00:19,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:00:19,875 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:00:19,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-24 01:00:19,875 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:00:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:00:19,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1368092217, now seen corresponding path program 31 times [2020-10-24 01:00:19,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:00:19,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140391021] [2020-10-24 01:00:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:00:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:00:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:00:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:22,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:25,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:25,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-24 01:00:26,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140391021] [2020-10-24 01:00:26,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:00:26,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-24 01:00:26,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372927269] [2020-10-24 01:00:26,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-24 01:00:26,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:00:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-24 01:00:26,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2020-10-24 01:00:26,605 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 68 states. [2020-10-24 01:00:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:00:46,731 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2020-10-24 01:00:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-24 01:00:46,733 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 242 [2020-10-24 01:00:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:00:46,735 INFO L225 Difference]: With dead ends: 161 [2020-10-24 01:00:46,735 INFO L226 Difference]: Without dead ends: 155 [2020-10-24 01:00:46,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=617, Invalid=26443, Unknown=0, NotChecked=0, Total=27060 [2020-10-24 01:00:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-24 01:00:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-10-24 01:00:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-24 01:00:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-10-24 01:00:46,756 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 242 [2020-10-24 01:00:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:00:46,757 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-10-24 01:00:46,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-24 01:00:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-10-24 01:00:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-24 01:00:46,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:00:46,758 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:00:46,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-24 01:00:46,758 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:00:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:00:46,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1645220423, now seen corresponding path program 32 times [2020-10-24 01:00:46,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:00:46,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672721267] [2020-10-24 01:00:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:00:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:00:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:00:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:48,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:48,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:50,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-24 01:00:53,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672721267] [2020-10-24 01:00:53,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:00:53,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-24 01:00:53,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69234534] [2020-10-24 01:00:53,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-24 01:00:53,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:00:53,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-24 01:00:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 01:00:53,920 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 70 states. [2020-10-24 01:01:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:01:15,159 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2020-10-24 01:01:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-10-24 01:01:15,161 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 249 [2020-10-24 01:01:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:01:15,163 INFO L225 Difference]: With dead ends: 165 [2020-10-24 01:01:15,163 INFO L226 Difference]: Without dead ends: 159 [2020-10-24 01:01:15,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4917 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=636, Invalid=28094, Unknown=0, NotChecked=0, Total=28730 [2020-10-24 01:01:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-24 01:01:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-10-24 01:01:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-24 01:01:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-10-24 01:01:15,184 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 249 [2020-10-24 01:01:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:01:15,184 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-10-24 01:01:15,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-24 01:01:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-10-24 01:01:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-24 01:01:15,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:01:15,186 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:01:15,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-24 01:01:15,186 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:01:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:01:15,187 INFO L82 PathProgramCache]: Analyzing trace with hash 411693315, now seen corresponding path program 33 times [2020-10-24 01:01:15,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:01:15,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070417639] [2020-10-24 01:01:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:01:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:01:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:15,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:01:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:15,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:17,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:17,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:18,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:19,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-24 01:01:23,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070417639] [2020-10-24 01:01:23,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:01:23,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-24 01:01:23,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261288564] [2020-10-24 01:01:23,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-24 01:01:23,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:01:23,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-24 01:01:23,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 01:01:23,156 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 72 states. [2020-10-24 01:01:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:01:45,993 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2020-10-24 01:01:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-10-24 01:01:45,994 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 256 [2020-10-24 01:01:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:01:45,996 INFO L225 Difference]: With dead ends: 169 [2020-10-24 01:01:45,996 INFO L226 Difference]: Without dead ends: 163 [2020-10-24 01:01:46,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5219 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=655, Invalid=29795, Unknown=0, NotChecked=0, Total=30450 [2020-10-24 01:01:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-24 01:01:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-24 01:01:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-24 01:01:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-10-24 01:01:46,021 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 256 [2020-10-24 01:01:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:01:46,022 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-10-24 01:01:46,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-24 01:01:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-10-24 01:01:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-24 01:01:46,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:01:46,025 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:01:46,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-24 01:01:46,025 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:01:46,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:01:46,025 INFO L82 PathProgramCache]: Analyzing trace with hash 206046275, now seen corresponding path program 34 times [2020-10-24 01:01:46,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:01:46,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529501335] [2020-10-24 01:01:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:01:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:01:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:01:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:49,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:49,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-24 01:01:54,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529501335] [2020-10-24 01:01:54,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:01:54,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-24 01:01:54,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218577186] [2020-10-24 01:01:54,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-24 01:01:54,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:01:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-24 01:01:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2020-10-24 01:01:54,297 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 74 states. [2020-10-24 01:02:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:18,841 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2020-10-24 01:02:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-24 01:02:18,842 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 263 [2020-10-24 01:02:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:18,843 INFO L225 Difference]: With dead ends: 173 [2020-10-24 01:02:18,844 INFO L226 Difference]: Without dead ends: 167 [2020-10-24 01:02:18,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5530 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=674, Invalid=31546, Unknown=0, NotChecked=0, Total=32220 [2020-10-24 01:02:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-24 01:02:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-10-24 01:02:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-24 01:02:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-10-24 01:02:18,861 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 263 [2020-10-24 01:02:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:18,861 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-10-24 01:02:18,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-24 01:02:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-10-24 01:02:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-24 01:02:18,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:18,863 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:02:18,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-24 01:02:18,863 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1711517235, now seen corresponding path program 35 times [2020-10-24 01:02:18,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:18,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902328366] [2020-10-24 01:02:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:02:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:20,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:21,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:22,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-24 01:02:27,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902328366] [2020-10-24 01:02:27,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:02:27,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-24 01:02:27,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204653322] [2020-10-24 01:02:27,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-24 01:02:27,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-24 01:02:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2020-10-24 01:02:27,774 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 76 states. [2020-10-24 01:02:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:53,799 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-10-24 01:02:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-10-24 01:02:53,800 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 270 [2020-10-24 01:02:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:53,802 INFO L225 Difference]: With dead ends: 177 [2020-10-24 01:02:53,802 INFO L226 Difference]: Without dead ends: 171 [2020-10-24 01:02:53,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5850 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=693, Invalid=33347, Unknown=0, NotChecked=0, Total=34040 [2020-10-24 01:02:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-24 01:02:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-24 01:02:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-24 01:02:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-10-24 01:02:53,824 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 270 [2020-10-24 01:02:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:53,824 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-10-24 01:02:53,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-24 01:02:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-10-24 01:02:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-24 01:02:53,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:53,827 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:02:53,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-24 01:02:53,827 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2032752435, now seen corresponding path program 36 times [2020-10-24 01:02:53,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:53,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544750934] [2020-10-24 01:02:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:02:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:57,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-24 01:03:03,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544750934] [2020-10-24 01:03:03,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:03:03,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-24 01:03:03,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074151631] [2020-10-24 01:03:03,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-24 01:03:03,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-24 01:03:03,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2020-10-24 01:03:03,332 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 78 states. [2020-10-24 01:03:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:30,570 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-10-24 01:03:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-10-24 01:03:30,572 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 277 [2020-10-24 01:03:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:30,575 INFO L225 Difference]: With dead ends: 181 [2020-10-24 01:03:30,575 INFO L226 Difference]: Without dead ends: 175 [2020-10-24 01:03:30,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6179 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=712, Invalid=35198, Unknown=0, NotChecked=0, Total=35910 [2020-10-24 01:03:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-24 01:03:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-10-24 01:03:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-24 01:03:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-10-24 01:03:30,598 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 277 [2020-10-24 01:03:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:30,599 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-10-24 01:03:30,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-24 01:03:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-10-24 01:03:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-24 01:03:30,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:30,601 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:03:30,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-24 01:03:30,601 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1652986007, now seen corresponding path program 37 times [2020-10-24 01:03:30,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:30,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340006698] [2020-10-24 01:03:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:03:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:33,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:33,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-24 01:03:40,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340006698] [2020-10-24 01:03:40,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:03:40,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-24 01:03:40,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314824987] [2020-10-24 01:03:40,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-24 01:03:40,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:40,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-24 01:03:40,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 01:03:40,715 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 80 states. [2020-10-24 01:04:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:04:09,921 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2020-10-24 01:04:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-10-24 01:04:09,922 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 284 [2020-10-24 01:04:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:04:09,924 INFO L225 Difference]: With dead ends: 185 [2020-10-24 01:04:09,925 INFO L226 Difference]: Without dead ends: 179 [2020-10-24 01:04:09,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6517 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=731, Invalid=37099, Unknown=0, NotChecked=0, Total=37830 [2020-10-24 01:04:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-24 01:04:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-24 01:04:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-24 01:04:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2020-10-24 01:04:09,949 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 284 [2020-10-24 01:04:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:04:09,949 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2020-10-24 01:04:09,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-24 01:04:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2020-10-24 01:04:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-24 01:04:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:09,952 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:04:09,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-24 01:04:09,952 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1670110039, now seen corresponding path program 38 times [2020-10-24 01:04:09,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:09,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640952617] [2020-10-24 01:04:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:04:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:04:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:12,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-24 01:04:21,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640952617] [2020-10-24 01:04:21,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:04:21,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-24 01:04:21,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555335531] [2020-10-24 01:04:21,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-24 01:04:21,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:04:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-24 01:04:21,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2020-10-24 01:04:21,303 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 82 states. [2020-10-24 01:04:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:04:52,444 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2020-10-24 01:04:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-24 01:04:52,446 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 291 [2020-10-24 01:04:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:04:52,447 INFO L225 Difference]: With dead ends: 189 [2020-10-24 01:04:52,448 INFO L226 Difference]: Without dead ends: 183 [2020-10-24 01:04:52,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=750, Invalid=39050, Unknown=0, NotChecked=0, Total=39800 [2020-10-24 01:04:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-24 01:04:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-10-24 01:04:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-24 01:04:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-10-24 01:04:52,474 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 291 [2020-10-24 01:04:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:04:52,474 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-10-24 01:04:52,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-24 01:04:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-10-24 01:04:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-24 01:04:52,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:52,476 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:04:52,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-24 01:04:52,477 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2025018015, now seen corresponding path program 39 times [2020-10-24 01:04:52,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:52,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577597971] [2020-10-24 01:04:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:04:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:04:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:56,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-10-24 01:05:04,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577597971] [2020-10-24 01:05:04,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:05:04,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-24 01:05:04,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963509771] [2020-10-24 01:05:04,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-24 01:05:04,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:04,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-24 01:05:04,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2020-10-24 01:05:04,941 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 84 states. [2020-10-24 01:05:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:38,795 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2020-10-24 01:05:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-10-24 01:05:38,796 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 298 [2020-10-24 01:05:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:38,798 INFO L225 Difference]: With dead ends: 193 [2020-10-24 01:05:38,798 INFO L226 Difference]: Without dead ends: 187 [2020-10-24 01:05:38,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7220 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=769, Invalid=41051, Unknown=0, NotChecked=0, Total=41820 [2020-10-24 01:05:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-24 01:05:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-24 01:05:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-24 01:05:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-10-24 01:05:38,817 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 298 [2020-10-24 01:05:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:38,818 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-10-24 01:05:38,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-24 01:05:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-10-24 01:05:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-24 01:05:38,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:38,820 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:05:38,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-24 01:05:38,820 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:38,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1948804127, now seen corresponding path program 40 times [2020-10-24 01:05:38,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:38,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60814156] [2020-10-24 01:05:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:05:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:42,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-10-24 01:05:52,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60814156] [2020-10-24 01:05:52,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:05:52,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-24 01:05:52,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414786748] [2020-10-24 01:05:52,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-24 01:05:52,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:52,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-24 01:05:52,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2020-10-24 01:05:52,031 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 86 states. [2020-10-24 01:06:28,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:06:28,140 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2020-10-24 01:06:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-24 01:06:28,141 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 305 [2020-10-24 01:06:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:06:28,143 INFO L225 Difference]: With dead ends: 197 [2020-10-24 01:06:28,144 INFO L226 Difference]: Without dead ends: 191 [2020-10-24 01:06:28,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=788, Invalid=43102, Unknown=0, NotChecked=0, Total=43890 [2020-10-24 01:06:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-24 01:06:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-10-24 01:06:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-24 01:06:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2020-10-24 01:06:28,161 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 305 [2020-10-24 01:06:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:06:28,161 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2020-10-24 01:06:28,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-24 01:06:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2020-10-24 01:06:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-24 01:06:28,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:06:28,163 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:06:28,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-24 01:06:28,163 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:06:28,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:06:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1173530667, now seen corresponding path program 41 times [2020-10-24 01:06:28,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:06:28,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118534874] [2020-10-24 01:06:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:06:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:06:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:06:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:29,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:31,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:37,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:38,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:39,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-10-24 01:06:41,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118534874] [2020-10-24 01:06:41,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:06:41,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-24 01:06:41,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228514394] [2020-10-24 01:06:41,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-24 01:06:41,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:06:41,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-24 01:06:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2020-10-24 01:06:41,941 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 88 states. [2020-10-24 01:07:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:07:20,957 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2020-10-24 01:07:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-24 01:07:20,959 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 312 [2020-10-24 01:07:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:07:20,962 INFO L225 Difference]: With dead ends: 201 [2020-10-24 01:07:20,962 INFO L226 Difference]: Without dead ends: 195 [2020-10-24 01:07:20,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7959 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=807, Invalid=45203, Unknown=0, NotChecked=0, Total=46010 [2020-10-24 01:07:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-24 01:07:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-24 01:07:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-24 01:07:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2020-10-24 01:07:20,989 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 312 [2020-10-24 01:07:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:07:20,990 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2020-10-24 01:07:20,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-24 01:07:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2020-10-24 01:07:20,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-24 01:07:20,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:07:20,992 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:07:20,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-24 01:07:20,993 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:07:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:07:20,993 INFO L82 PathProgramCache]: Analyzing trace with hash -592844181, now seen corresponding path program 42 times [2020-10-24 01:07:20,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:07:20,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418368540] [2020-10-24 01:07:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:07:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:07:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:07:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:30,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:31,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-10-24 01:07:36,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418368540] [2020-10-24 01:07:36,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:07:36,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-24 01:07:36,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541137140] [2020-10-24 01:07:36,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-24 01:07:36,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:07:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-24 01:07:36,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 01:07:36,069 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 90 states. [2020-10-24 01:08:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:08:18,801 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2020-10-24 01:08:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-10-24 01:08:18,802 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 319 [2020-10-24 01:08:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:08:18,805 INFO L225 Difference]: With dead ends: 205 [2020-10-24 01:08:18,805 INFO L226 Difference]: Without dead ends: 199 [2020-10-24 01:08:18,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8342 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=826, Invalid=47354, Unknown=0, NotChecked=0, Total=48180 [2020-10-24 01:08:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-24 01:08:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-10-24 01:08:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-24 01:08:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2020-10-24 01:08:18,836 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 319 [2020-10-24 01:08:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:08:18,836 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2020-10-24 01:08:18,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-24 01:08:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2020-10-24 01:08:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-24 01:08:18,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:08:18,839 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:08:18,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-24 01:08:18,839 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:08:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:08:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1533247243, now seen corresponding path program 43 times [2020-10-24 01:08:18,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:08:18,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299521952] [2020-10-24 01:08:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:08:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:19,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:08:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:19,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:08:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:19,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:19,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:20,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:22,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:30,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-10-24 01:08:34,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299521952] [2020-10-24 01:08:34,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:08:34,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-10-24 01:08:34,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403348580] [2020-10-24 01:08:34,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-10-24 01:08:34,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:08:34,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-10-24 01:08:34,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2020-10-24 01:08:34,725 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 92 states.