/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 0.2.0-7d8eed3 [2020-11-07 05:07:55,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:07:55,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:07:55,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:07:55,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:07:55,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:07:55,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:07:55,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:07:55,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:07:55,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:07:55,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:07:55,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:07:55,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:07:55,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:07:55,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:07:55,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:07:55,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:07:55,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:07:55,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:07:55,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:07:55,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:07:55,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:07:55,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:07:55,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:07:55,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:07:55,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:07:55,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:07:55,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:07:55,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:07:55,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:07:55,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:07:55,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:07:55,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:07:55,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:07:55,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:07:55,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:07:55,476 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:07:55,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:07:55,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:07:55,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:07:55,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:07:55,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:07:55,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:07:55,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:07:56,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:07:56,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:07:56,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:07:56,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:07:56,106 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:07:56,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-11-07 05:07:56,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2948fff3e/d296040df9e84c7b8d35c6a9056403e9/FLAGd88919068 [2020-11-07 05:07:57,007 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:07:57,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-11-07 05:07:57,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2948fff3e/d296040df9e84c7b8d35c6a9056403e9/FLAGd88919068 [2020-11-07 05:07:57,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2948fff3e/d296040df9e84c7b8d35c6a9056403e9 [2020-11-07 05:07:57,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:07:57,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:07:57,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:07:57,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:07:57,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:07:57,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d4b1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57, skipping insertion in model container [2020-11-07 05:07:57,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:07:57,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:07:57,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:07:57,611 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:07:57,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:07:57,646 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:07:57,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57 WrapperNode [2020-11-07 05:07:57,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:07:57,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:07:57,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:07:57,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:07:57,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (1/1) ... [2020-11-07 05:07:57,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:07:57,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:07:57,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:07:57,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:07:57,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (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 [2020-11-07 05:07:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:07:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:07:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:07:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-07 05:07:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:07:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 05:07:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:07:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:07:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:07:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:07:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-07 05:07:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:07:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:07:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:07:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:07:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:07:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:07:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:07:58,111 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:07:58,112 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:07:58,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:07:58 BoogieIcfgContainer [2020-11-07 05:07:58,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:07:58,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:07:58,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:07:58,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:07:58,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:07:57" (1/3) ... [2020-11-07 05:07:58,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e077cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:07:58, skipping insertion in model container [2020-11-07 05:07:58,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:07:57" (2/3) ... [2020-11-07 05:07:58,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e077cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:07:58, skipping insertion in model container [2020-11-07 05:07:58,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:07:58" (3/3) ... [2020-11-07 05:07:58,129 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-11-07 05:07:58,170 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:07:58,177 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:07:58,199 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:07:58,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:07:58,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:07:58,250 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:07:58,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:07:58,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:07:58,250 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:07:58,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:07:58,251 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:07:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-07 05:07:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 05:07:58,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:07:58,301 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] [2020-11-07 05:07:58,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:07:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:07:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash -2039876327, now seen corresponding path program 1 times [2020-11-07 05:07:58,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:07:58,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748685509] [2020-11-07 05:07:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:07:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:07:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:07:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:07:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:07:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:07:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:07:59,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748685509] [2020-11-07 05:07:59,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:07:59,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:07:59,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158946608] [2020-11-07 05:07:59,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:07:59,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:07:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:07:59,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:07:59,049 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-11-07 05:07:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:07:59,673 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-11-07 05:07:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:07:59,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 05:07:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:07:59,704 INFO L225 Difference]: With dead ends: 50 [2020-11-07 05:07:59,707 INFO L226 Difference]: Without dead ends: 31 [2020-11-07 05:07:59,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:07:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-07 05:07:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-07 05:07:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-07 05:07:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-07 05:07:59,783 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-11-07 05:07:59,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:07:59,784 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-07 05:07:59,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:07:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-07 05:07:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 05:07:59,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:07:59,788 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] [2020-11-07 05:07:59,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:07:59,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:07:59,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:07:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1789799325, now seen corresponding path program 1 times [2020-11-07 05:07:59,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:07:59,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445550058] [2020-11-07 05:07:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:07:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:08:00,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445550058] [2020-11-07 05:08:00,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:00,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:08:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882279290] [2020-11-07 05:08:00,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:08:00,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:00,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:08:00,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:08:00,122 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-11-07 05:08:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:00,532 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-07 05:08:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:08:00,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-11-07 05:08:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:00,535 INFO L225 Difference]: With dead ends: 41 [2020-11-07 05:08:00,535 INFO L226 Difference]: Without dead ends: 35 [2020-11-07 05:08:00,537 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 [2020-11-07 05:08:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-07 05:08:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-07 05:08:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 05:08:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-07 05:08:00,553 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-11-07 05:08:00,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:00,554 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-07 05:08:00,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:08:00,554 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-07 05:08:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 05:08:00,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:00,559 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] [2020-11-07 05:08:00,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:08:00,559 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash 819538851, now seen corresponding path program 2 times [2020-11-07 05:08:00,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:00,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622626513] [2020-11-07 05:08:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 05:08:00,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622626513] [2020-11-07 05:08:00,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:00,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:08:00,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184940986] [2020-11-07 05:08:00,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:08:00,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:08:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:08:00,898 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-11-07 05:08:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:01,746 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-11-07 05:08:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 05:08:01,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-07 05:08:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:01,748 INFO L225 Difference]: With dead ends: 45 [2020-11-07 05:08:01,749 INFO L226 Difference]: Without dead ends: 39 [2020-11-07 05:08:01,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-07 05:08:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-07 05:08:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-07 05:08:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 05:08:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-07 05:08:01,763 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 39 [2020-11-07 05:08:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:01,763 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-07 05:08:01,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:08:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-07 05:08:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 05:08:01,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:01,765 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] [2020-11-07 05:08:01,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:08:01,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:01,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1214666029, now seen corresponding path program 3 times [2020-11-07 05:08:01,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:01,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341551713] [2020-11-07 05:08:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:01,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-07 05:08:02,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341551713] [2020-11-07 05:08:02,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:02,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 05:08:02,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37687880] [2020-11-07 05:08:02,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 05:08:02,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 05:08:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:08:02,154 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 12 states. [2020-11-07 05:08:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:03,110 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-07 05:08:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:08:03,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-07 05:08:03,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:03,112 INFO L225 Difference]: With dead ends: 49 [2020-11-07 05:08:03,112 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 05:08:03,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-11-07 05:08:03,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 05:08:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-07 05:08:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-07 05:08:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-11-07 05:08:03,137 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 46 [2020-11-07 05:08:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:03,138 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-11-07 05:08:03,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 05:08:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-11-07 05:08:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 05:08:03,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:03,140 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] [2020-11-07 05:08:03,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:08:03,140 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash -461443027, now seen corresponding path program 4 times [2020-11-07 05:08:03,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:03,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350139320] [2020-11-07 05:08:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 05:08:03,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350139320] [2020-11-07 05:08:03,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:03,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 05:08:03,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108246327] [2020-11-07 05:08:03,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 05:08:03,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:03,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 05:08:03,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:08:03,670 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 14 states. [2020-11-07 05:08:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:04,843 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-11-07 05:08:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 05:08:04,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-11-07 05:08:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:04,848 INFO L225 Difference]: With dead ends: 53 [2020-11-07 05:08:04,848 INFO L226 Difference]: Without dead ends: 47 [2020-11-07 05:08:04,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-11-07 05:08:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-07 05:08:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-07 05:08:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 05:08:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-11-07 05:08:04,867 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 53 [2020-11-07 05:08:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:04,868 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-11-07 05:08:04,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 05:08:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-11-07 05:08:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-07 05:08:04,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:04,871 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] [2020-11-07 05:08:04,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:08:04,871 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1951577079, now seen corresponding path program 5 times [2020-11-07 05:08:04,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:04,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048004107] [2020-11-07 05:08:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 05:08:05,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048004107] [2020-11-07 05:08:05,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:05,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 05:08:05,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215497061] [2020-11-07 05:08:05,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 05:08:05,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:05,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 05:08:05,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:08:05,425 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-11-07 05:08:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:06,845 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-11-07 05:08:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 05:08:06,846 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-11-07 05:08:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:06,848 INFO L225 Difference]: With dead ends: 57 [2020-11-07 05:08:06,848 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 05:08:06,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 05:08:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 05:08:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 05:08:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 05:08:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-11-07 05:08:06,884 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 60 [2020-11-07 05:08:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:06,884 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-11-07 05:08:06,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 05:08:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-11-07 05:08:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 05:08:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:06,895 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] [2020-11-07 05:08:06,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:08:06,895 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1085586761, now seen corresponding path program 6 times [2020-11-07 05:08:06,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:06,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399794851] [2020-11-07 05:08:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-07 05:08:07,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399794851] [2020-11-07 05:08:07,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:07,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-11-07 05:08:07,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682760380] [2020-11-07 05:08:07,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 05:08:07,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 05:08:07,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:08:07,493 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-11-07 05:08:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:09,126 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-11-07 05:08:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 05:08:09,126 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-11-07 05:08:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:09,128 INFO L225 Difference]: With dead ends: 61 [2020-11-07 05:08:09,128 INFO L226 Difference]: Without dead ends: 55 [2020-11-07 05:08:09,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 05:08:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-07 05:08:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-07 05:08:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-07 05:08:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-11-07 05:08:09,146 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 67 [2020-11-07 05:08:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:09,147 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-11-07 05:08:09,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 05:08:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-11-07 05:08:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-07 05:08:09,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:09,149 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] [2020-11-07 05:08:09,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:08:09,149 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:09,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:09,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1506086719, now seen corresponding path program 7 times [2020-11-07 05:08:09,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:09,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229728346] [2020-11-07 05:08:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-07 05:08:09,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229728346] [2020-11-07 05:08:09,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:09,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-11-07 05:08:09,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671165438] [2020-11-07 05:08:09,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 05:08:09,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:09,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 05:08:09,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-11-07 05:08:09,767 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 20 states. [2020-11-07 05:08:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:11,725 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-11-07 05:08:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-07 05:08:11,726 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-11-07 05:08:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:11,727 INFO L225 Difference]: With dead ends: 65 [2020-11-07 05:08:11,728 INFO L226 Difference]: Without dead ends: 59 [2020-11-07 05:08:11,733 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 [2020-11-07 05:08:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-07 05:08:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-07 05:08:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 05:08:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-11-07 05:08:11,756 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 74 [2020-11-07 05:08:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:11,758 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-11-07 05:08:11,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 05:08:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-11-07 05:08:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-07 05:08:11,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:11,760 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] [2020-11-07 05:08:11,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:08:11,760 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:11,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:11,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1924014913, now seen corresponding path program 8 times [2020-11-07 05:08:11,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:11,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503296584] [2020-11-07 05:08:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:11,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-07 05:08:12,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503296584] [2020-11-07 05:08:12,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:12,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 05:08:12,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361382551] [2020-11-07 05:08:12,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 05:08:12,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:12,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 05:08:12,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-11-07 05:08:12,527 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 22 states. [2020-11-07 05:08:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:14,798 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-11-07 05:08:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-07 05:08:14,799 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-11-07 05:08:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:14,801 INFO L225 Difference]: With dead ends: 69 [2020-11-07 05:08:14,801 INFO L226 Difference]: Without dead ends: 63 [2020-11-07 05:08:14,804 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 [2020-11-07 05:08:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-07 05:08:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-07 05:08:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-07 05:08:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-11-07 05:08:14,823 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 81 [2020-11-07 05:08:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:14,824 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-11-07 05:08:14,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 05:08:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-11-07 05:08:14,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 05:08:14,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:14,828 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] [2020-11-07 05:08:14,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:08:14,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:14,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1815934069, now seen corresponding path program 9 times [2020-11-07 05:08:14,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:14,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806795228] [2020-11-07 05:08:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-07 05:08:15,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806795228] [2020-11-07 05:08:15,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:15,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-11-07 05:08:15,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261631122] [2020-11-07 05:08:15,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-07 05:08:15,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:15,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-07 05:08:15,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-11-07 05:08:15,741 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 24 states. [2020-11-07 05:08:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:18,224 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-11-07 05:08:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-07 05:08:18,225 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 88 [2020-11-07 05:08:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:18,226 INFO L225 Difference]: With dead ends: 73 [2020-11-07 05:08:18,226 INFO L226 Difference]: Without dead ends: 67 [2020-11-07 05:08:18,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2020-11-07 05:08:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-07 05:08:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-07 05:08:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 05:08:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-11-07 05:08:18,242 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 88 [2020-11-07 05:08:18,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:18,243 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-11-07 05:08:18,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-07 05:08:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-11-07 05:08:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-07 05:08:18,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:18,245 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] [2020-11-07 05:08:18,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:08:18,245 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:18,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:18,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1550347829, now seen corresponding path program 10 times [2020-11-07 05:08:18,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:18,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037245054] [2020-11-07 05:08:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:18,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:19,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-07 05:08:19,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037245054] [2020-11-07 05:08:19,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:19,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-11-07 05:08:19,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450798634] [2020-11-07 05:08:19,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-07 05:08:19,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-07 05:08:19,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-11-07 05:08:19,186 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 26 states. [2020-11-07 05:08:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:22,156 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-11-07 05:08:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 05:08:22,157 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 95 [2020-11-07 05:08:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:22,158 INFO L225 Difference]: With dead ends: 77 [2020-11-07 05:08:22,158 INFO L226 Difference]: Without dead ends: 71 [2020-11-07 05:08:22,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 05:08:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-07 05:08:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-07 05:08:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-07 05:08:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-11-07 05:08:22,176 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 95 [2020-11-07 05:08:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:22,176 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-11-07 05:08:22,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-07 05:08:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-11-07 05:08:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-07 05:08:22,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:22,178 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] [2020-11-07 05:08:22,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:08:22,178 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1156643755, now seen corresponding path program 11 times [2020-11-07 05:08:22,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:22,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221996452] [2020-11-07 05:08:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:22,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-07 05:08:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221996452] [2020-11-07 05:08:23,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:23,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-11-07 05:08:23,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997238616] [2020-11-07 05:08:23,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-07 05:08:23,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:23,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-07 05:08:23,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-11-07 05:08:23,210 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 28 states. [2020-11-07 05:08:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:26,630 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-11-07 05:08:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 05:08:26,631 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-11-07 05:08:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:26,632 INFO L225 Difference]: With dead ends: 81 [2020-11-07 05:08:26,632 INFO L226 Difference]: Without dead ends: 75 [2020-11-07 05:08:26,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 05:08:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-07 05:08:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-07 05:08:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 05:08:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-11-07 05:08:26,648 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 102 [2020-11-07 05:08:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:26,648 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-11-07 05:08:26,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-07 05:08:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-11-07 05:08:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-07 05:08:26,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:26,650 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] [2020-11-07 05:08:26,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:08:26,651 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1249349205, now seen corresponding path program 12 times [2020-11-07 05:08:26,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:26,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199939433] [2020-11-07 05:08:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-07 05:08:27,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199939433] [2020-11-07 05:08:27,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:27,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-11-07 05:08:27,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101684759] [2020-11-07 05:08:27,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 05:08:27,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:27,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 05:08:27,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-11-07 05:08:27,966 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 30 states. [2020-11-07 05:08:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:31,864 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-11-07 05:08:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-07 05:08:31,865 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 109 [2020-11-07 05:08:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:31,867 INFO L225 Difference]: With dead ends: 85 [2020-11-07 05:08:31,867 INFO L226 Difference]: Without dead ends: 79 [2020-11-07 05:08:31,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 05:08:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-07 05:08:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-07 05:08:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-07 05:08:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-11-07 05:08:31,885 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 109 [2020-11-07 05:08:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:31,886 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-11-07 05:08:31,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 05:08:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-11-07 05:08:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-07 05:08:31,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:31,887 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] [2020-11-07 05:08:31,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:08:31,888 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash 46324511, now seen corresponding path program 13 times [2020-11-07 05:08:31,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:31,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759923622] [2020-11-07 05:08:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-07 05:08:33,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759923622] [2020-11-07 05:08:33,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:33,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-11-07 05:08:33,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46981999] [2020-11-07 05:08:33,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-07 05:08:33,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:33,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-07 05:08:33,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-11-07 05:08:33,218 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 32 states. [2020-11-07 05:08:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:37,681 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-11-07 05:08:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 05:08:37,682 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2020-11-07 05:08:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:37,683 INFO L225 Difference]: With dead ends: 89 [2020-11-07 05:08:37,683 INFO L226 Difference]: Without dead ends: 83 [2020-11-07 05:08:37,689 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 [2020-11-07 05:08:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-07 05:08:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-07 05:08:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-07 05:08:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-11-07 05:08:37,709 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2020-11-07 05:08:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:37,710 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-11-07 05:08:37,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-07 05:08:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-11-07 05:08:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-07 05:08:37,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:37,712 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] [2020-11-07 05:08:37,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:08:37,713 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:37,713 INFO L82 PathProgramCache]: Analyzing trace with hash 322836703, now seen corresponding path program 14 times [2020-11-07 05:08:37,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:37,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130762994] [2020-11-07 05:08:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:37,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:39,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:39,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-07 05:08:39,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130762994] [2020-11-07 05:08:39,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:39,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-11-07 05:08:39,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220538418] [2020-11-07 05:08:39,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-07 05:08:39,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-07 05:08:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 05:08:39,415 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 34 states. [2020-11-07 05:08:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:44,375 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-11-07 05:08:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-07 05:08:44,376 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 123 [2020-11-07 05:08:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:44,378 INFO L225 Difference]: With dead ends: 93 [2020-11-07 05:08:44,378 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 05:08:44,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=294, Invalid=6026, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 05:08:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 05:08:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 05:08:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 05:08:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-11-07 05:08:44,394 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 123 [2020-11-07 05:08:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:44,395 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-11-07 05:08:44,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-07 05:08:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-11-07 05:08:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-07 05:08:44,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:44,397 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] [2020-11-07 05:08:44,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:08:44,398 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:44,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117353, now seen corresponding path program 15 times [2020-11-07 05:08:44,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:44,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593075261] [2020-11-07 05:08:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-07 05:08:46,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593075261] [2020-11-07 05:08:46,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:46,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-11-07 05:08:46,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315315364] [2020-11-07 05:08:46,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 05:08:46,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:46,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 05:08:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 05:08:46,138 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 36 states. [2020-11-07 05:08:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:08:51,764 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-11-07 05:08:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-07 05:08:51,765 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 130 [2020-11-07 05:08:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:08:51,767 INFO L225 Difference]: With dead ends: 97 [2020-11-07 05:08:51,767 INFO L226 Difference]: Without dead ends: 91 [2020-11-07 05:08:51,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=313, Invalid=6827, Unknown=0, NotChecked=0, Total=7140 [2020-11-07 05:08:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-07 05:08:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-07 05:08:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 05:08:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-11-07 05:08:51,792 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 130 [2020-11-07 05:08:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:08:51,793 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-11-07 05:08:51,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 05:08:51,793 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-11-07 05:08:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 05:08:51,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:08:51,795 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] [2020-11-07 05:08:51,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:08:51,796 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:08:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:08:51,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1118097047, now seen corresponding path program 16 times [2020-11-07 05:08:51,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:08:51,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634543271] [2020-11-07 05:08:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:08:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:08:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:08:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:08:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:08:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-07 05:08:53,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634543271] [2020-11-07 05:08:53,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:08:53,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-11-07 05:08:53,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681998097] [2020-11-07 05:08:53,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 05:08:53,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:08:53,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 05:08:53,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 05:08:53,938 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 38 states. [2020-11-07 05:09:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:00,343 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-11-07 05:09:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-07 05:09:00,344 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 137 [2020-11-07 05:09:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:00,348 INFO L225 Difference]: With dead ends: 101 [2020-11-07 05:09:00,348 INFO L226 Difference]: Without dead ends: 95 [2020-11-07 05:09:00,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=332, Invalid=7678, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 05:09:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-07 05:09:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-07 05:09:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-07 05:09:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-11-07 05:09:00,370 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 137 [2020-11-07 05:09:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:00,371 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-11-07 05:09:00,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 05:09:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-11-07 05:09:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-11-07 05:09:00,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:00,372 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] [2020-11-07 05:09:00,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 05:09:00,373 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1483874995, now seen corresponding path program 17 times [2020-11-07 05:09:00,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:00,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226003546] [2020-11-07 05:09:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:02,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-07 05:09:02,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226003546] [2020-11-07 05:09:02,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:02,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-11-07 05:09:02,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552015597] [2020-11-07 05:09:02,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 05:09:02,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:02,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 05:09:02,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 05:09:02,767 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 40 states. [2020-11-07 05:09:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:09,753 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-11-07 05:09:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-07 05:09:09,754 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2020-11-07 05:09:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:09,755 INFO L225 Difference]: With dead ends: 105 [2020-11-07 05:09:09,755 INFO L226 Difference]: Without dead ends: 99 [2020-11-07 05:09:09,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=351, Invalid=8579, Unknown=0, NotChecked=0, Total=8930 [2020-11-07 05:09:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-07 05:09:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-11-07 05:09:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-07 05:09:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-11-07 05:09:09,769 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 144 [2020-11-07 05:09:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:09,770 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-11-07 05:09:09,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 05:09:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-11-07 05:09:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-07 05:09:09,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:09,772 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] [2020-11-07 05:09:09,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 05:09:09,772 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:09,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2076104691, now seen corresponding path program 18 times [2020-11-07 05:09:09,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:09,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133307431] [2020-11-07 05:09:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-07 05:09:11,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133307431] [2020-11-07 05:09:11,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:11,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-11-07 05:09:11,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296805000] [2020-11-07 05:09:11,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-07 05:09:11,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:11,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-07 05:09:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 05:09:11,948 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 42 states. [2020-11-07 05:09:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:18,973 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-11-07 05:09:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-07 05:09:18,974 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 151 [2020-11-07 05:09:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:18,976 INFO L225 Difference]: With dead ends: 109 [2020-11-07 05:09:18,976 INFO L226 Difference]: Without dead ends: 103 [2020-11-07 05:09:18,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=370, Invalid=9530, Unknown=0, NotChecked=0, Total=9900 [2020-11-07 05:09:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-07 05:09:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-11-07 05:09:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-07 05:09:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-11-07 05:09:18,992 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 151 [2020-11-07 05:09:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:18,993 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-11-07 05:09:18,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-07 05:09:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-11-07 05:09:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-07 05:09:18,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:18,995 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] [2020-11-07 05:09:18,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 05:09:18,995 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:18,996 INFO L82 PathProgramCache]: Analyzing trace with hash -566914179, now seen corresponding path program 19 times [2020-11-07 05:09:18,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:18,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857396804] [2020-11-07 05:09:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-07 05:09:21,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857396804] [2020-11-07 05:09:21,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:21,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-11-07 05:09:21,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686853888] [2020-11-07 05:09:21,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 05:09:21,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:21,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 05:09:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 05:09:21,683 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 44 states. [2020-11-07 05:09:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:29,918 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2020-11-07 05:09:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-07 05:09:29,919 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 158 [2020-11-07 05:09:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:29,922 INFO L225 Difference]: With dead ends: 113 [2020-11-07 05:09:29,922 INFO L226 Difference]: Without dead ends: 107 [2020-11-07 05:09:29,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=389, Invalid=10531, Unknown=0, NotChecked=0, Total=10920 [2020-11-07 05:09:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-07 05:09:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-07 05:09:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-07 05:09:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-11-07 05:09:29,938 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 158 [2020-11-07 05:09:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:29,938 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-11-07 05:09:29,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 05:09:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-11-07 05:09:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-07 05:09:29,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:29,940 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] [2020-11-07 05:09:29,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 05:09:29,940 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1423510653, now seen corresponding path program 20 times [2020-11-07 05:09:29,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:29,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462882047] [2020-11-07 05:09:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:30,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-07 05:09:32,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462882047] [2020-11-07 05:09:32,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:32,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-11-07 05:09:32,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275112387] [2020-11-07 05:09:32,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-07 05:09:32,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:32,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-07 05:09:32,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 05:09:32,732 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 46 states. [2020-11-07 05:09:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:41,679 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-11-07 05:09:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-07 05:09:41,680 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 165 [2020-11-07 05:09:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:41,682 INFO L225 Difference]: With dead ends: 117 [2020-11-07 05:09:41,683 INFO L226 Difference]: Without dead ends: 111 [2020-11-07 05:09:41,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=408, Invalid=11582, Unknown=0, NotChecked=0, Total=11990 [2020-11-07 05:09:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-07 05:09:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-11-07 05:09:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-07 05:09:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-11-07 05:09:41,701 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 165 [2020-11-07 05:09:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:41,702 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-11-07 05:09:41,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-07 05:09:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-11-07 05:09:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-07 05:09:41,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:41,704 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] [2020-11-07 05:09:41,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 05:09:41,704 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1276059065, now seen corresponding path program 21 times [2020-11-07 05:09:41,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:41,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786624983] [2020-11-07 05:09:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:41,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:42,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:43,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-07 05:09:44,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786624983] [2020-11-07 05:09:44,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:44,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-11-07 05:09:44,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356471877] [2020-11-07 05:09:44,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-07 05:09:44,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:44,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-07 05:09:44,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 05:09:44,977 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 48 states. [2020-11-07 05:09:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:55,046 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-11-07 05:09:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-07 05:09:55,050 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 172 [2020-11-07 05:09:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:55,052 INFO L225 Difference]: With dead ends: 121 [2020-11-07 05:09:55,052 INFO L226 Difference]: Without dead ends: 115 [2020-11-07 05:09:55,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=427, Invalid=12683, Unknown=0, NotChecked=0, Total=13110 [2020-11-07 05:09:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-07 05:09:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-11-07 05:09:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-07 05:09:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-11-07 05:09:55,076 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 172 [2020-11-07 05:09:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:55,076 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-11-07 05:09:55,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-07 05:09:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-11-07 05:09:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-07 05:09:55,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:55,078 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] [2020-11-07 05:09:55,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 05:09:55,079 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2103849209, now seen corresponding path program 22 times [2020-11-07 05:09:55,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:55,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439421418] [2020-11-07 05:09:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:09:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:09:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-07 05:09:58,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439421418] [2020-11-07 05:09:58,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:09:58,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-11-07 05:09:58,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337325758] [2020-11-07 05:09:58,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-07 05:09:58,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:58,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-07 05:09:58,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 05:09:58,937 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 50 states. [2020-11-07 05:10:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:10,045 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2020-11-07 05:10:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-07 05:10:10,046 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 179 [2020-11-07 05:10:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:10,048 INFO L225 Difference]: With dead ends: 125 [2020-11-07 05:10:10,048 INFO L226 Difference]: Without dead ends: 119 [2020-11-07 05:10:10,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=446, Invalid=13834, Unknown=0, NotChecked=0, Total=14280 [2020-11-07 05:10:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-07 05:10:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-11-07 05:10:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-07 05:10:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-11-07 05:10:10,069 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 179 [2020-11-07 05:10:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:10,069 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-11-07 05:10:10,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-07 05:10:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-11-07 05:10:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-11-07 05:10:10,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:10,071 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] [2020-11-07 05:10:10,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 05:10:10,072 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash 717754129, now seen corresponding path program 23 times [2020-11-07 05:10:10,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:10,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989137793] [2020-11-07 05:10:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:10:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-07 05:10:13,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989137793] [2020-11-07 05:10:13,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:13,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-11-07 05:10:13,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140172056] [2020-11-07 05:10:13,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-07 05:10:13,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:13,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-07 05:10:13,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 05:10:13,998 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 52 states. [2020-11-07 05:10:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:26,003 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-11-07 05:10:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-07 05:10:26,004 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 186 [2020-11-07 05:10:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:26,006 INFO L225 Difference]: With dead ends: 129 [2020-11-07 05:10:26,006 INFO L226 Difference]: Without dead ends: 123 [2020-11-07 05:10:26,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=465, Invalid=15035, Unknown=0, NotChecked=0, Total=15500 [2020-11-07 05:10:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-07 05:10:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-11-07 05:10:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-07 05:10:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-11-07 05:10:26,035 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 186 [2020-11-07 05:10:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:26,036 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-11-07 05:10:26,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-07 05:10:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-11-07 05:10:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-11-07 05:10:26,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:26,038 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] [2020-11-07 05:10:26,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 05:10:26,039 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash -764338287, now seen corresponding path program 24 times [2020-11-07 05:10:26,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:26,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610648489] [2020-11-07 05:10:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:10:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-07 05:10:30,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610648489] [2020-11-07 05:10:30,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:30,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-11-07 05:10:30,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751629190] [2020-11-07 05:10:30,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-07 05:10:30,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-07 05:10:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 05:10:30,510 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 54 states. [2020-11-07 05:10:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:42,746 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2020-11-07 05:10:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-07 05:10:42,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 193 [2020-11-07 05:10:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:42,750 INFO L225 Difference]: With dead ends: 133 [2020-11-07 05:10:42,750 INFO L226 Difference]: Without dead ends: 127 [2020-11-07 05:10:42,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=484, Invalid=16286, Unknown=0, NotChecked=0, Total=16770 [2020-11-07 05:10:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-07 05:10:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-11-07 05:10:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-07 05:10:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-11-07 05:10:42,768 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 193 [2020-11-07 05:10:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:42,768 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-11-07 05:10:42,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-07 05:10:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-11-07 05:10:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-07 05:10:42,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:42,770 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] [2020-11-07 05:10:42,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 05:10:42,771 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1134618149, now seen corresponding path program 25 times [2020-11-07 05:10:42,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:42,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81670693] [2020-11-07 05:10:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:10:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:10:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-11-07 05:10:46,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81670693] [2020-11-07 05:10:46,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:10:46,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-11-07 05:10:46,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325173296] [2020-11-07 05:10:46,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-07 05:10:46,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:46,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-07 05:10:46,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 05:10:46,852 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 56 states. [2020-11-07 05:11:00,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:00,045 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-11-07 05:11:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-07 05:11:00,046 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 200 [2020-11-07 05:11:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:00,048 INFO L225 Difference]: With dead ends: 137 [2020-11-07 05:11:00,048 INFO L226 Difference]: Without dead ends: 131 [2020-11-07 05:11:00,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=503, Invalid=17587, Unknown=0, NotChecked=0, Total=18090 [2020-11-07 05:11:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-07 05:11:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-11-07 05:11:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-07 05:11:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-11-07 05:11:00,068 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 200 [2020-11-07 05:11:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:00,069 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-11-07 05:11:00,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-07 05:11:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-11-07 05:11:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-11-07 05:11:00,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:00,071 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] [2020-11-07 05:11:00,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-07 05:11:00,071 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:00,072 INFO L82 PathProgramCache]: Analyzing trace with hash 89062939, now seen corresponding path program 26 times [2020-11-07 05:11:00,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:00,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589716336] [2020-11-07 05:11:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:11:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:03,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-11-07 05:11:04,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589716336] [2020-11-07 05:11:04,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:11:04,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-11-07 05:11:04,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662525069] [2020-11-07 05:11:04,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-07 05:11:04,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-07 05:11:04,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 05:11:04,643 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 58 states. [2020-11-07 05:11:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:18,811 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-11-07 05:11:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-07 05:11:18,812 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 207 [2020-11-07 05:11:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:18,814 INFO L225 Difference]: With dead ends: 141 [2020-11-07 05:11:18,815 INFO L226 Difference]: Without dead ends: 135 [2020-11-07 05:11:18,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=522, Invalid=18938, Unknown=0, NotChecked=0, Total=19460 [2020-11-07 05:11:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-07 05:11:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-11-07 05:11:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-07 05:11:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-11-07 05:11:18,829 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 207 [2020-11-07 05:11:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:18,830 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-11-07 05:11:18,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-07 05:11:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-11-07 05:11:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-07 05:11:18,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:18,831 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] [2020-11-07 05:11:18,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-07 05:11:18,832 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:18,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1428553051, now seen corresponding path program 27 times [2020-11-07 05:11:18,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:18,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698253445] [2020-11-07 05:11:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:11:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:21,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-11-07 05:11:23,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698253445] [2020-11-07 05:11:23,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:11:23,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-11-07 05:11:23,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037763245] [2020-11-07 05:11:23,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-07 05:11:23,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:23,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-07 05:11:23,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 05:11:23,673 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 60 states. [2020-11-07 05:11:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:39,279 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2020-11-07 05:11:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-11-07 05:11:39,280 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 214 [2020-11-07 05:11:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:39,282 INFO L225 Difference]: With dead ends: 145 [2020-11-07 05:11:39,282 INFO L226 Difference]: Without dead ends: 139 [2020-11-07 05:11:39,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3542 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=541, Invalid=20339, Unknown=0, NotChecked=0, Total=20880 [2020-11-07 05:11:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-07 05:11:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-11-07 05:11:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-07 05:11:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-11-07 05:11:39,303 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 214 [2020-11-07 05:11:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:39,304 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-11-07 05:11:39,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-07 05:11:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-11-07 05:11:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-11-07 05:11:39,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:39,306 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] [2020-11-07 05:11:39,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-07 05:11:39,306 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash 799238821, now seen corresponding path program 28 times [2020-11-07 05:11:39,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:39,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55671022] [2020-11-07 05:11:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:11:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:39,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:43,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:11:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-11-07 05:11:44,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55671022] [2020-11-07 05:11:44,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:11:44,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-11-07 05:11:44,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763862132] [2020-11-07 05:11:44,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-07 05:11:44,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:44,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-07 05:11:44,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2020-11-07 05:11:44,829 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 62 states. [2020-11-07 05:12:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:12:02,041 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2020-11-07 05:12:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-07 05:12:02,042 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 221 [2020-11-07 05:12:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:12:02,044 INFO L225 Difference]: With dead ends: 149 [2020-11-07 05:12:02,044 INFO L226 Difference]: Without dead ends: 143 [2020-11-07 05:12:02,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=560, Invalid=21790, Unknown=0, NotChecked=0, Total=22350 [2020-11-07 05:12:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-07 05:12:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-11-07 05:12:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-07 05:12:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-11-07 05:12:02,071 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 221 [2020-11-07 05:12:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:12:02,071 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-11-07 05:12:02,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-07 05:12:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-11-07 05:12:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-11-07 05:12:02,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:12:02,074 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] [2020-11-07 05:12:02,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-07 05:12:02,075 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:12:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:12:02,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1596143249, now seen corresponding path program 29 times [2020-11-07 05:12:02,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:12:02,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166078945] [2020-11-07 05:12:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:12:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:12:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:12:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:07,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:07,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-11-07 05:12:08,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166078945] [2020-11-07 05:12:08,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:12:08,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-11-07 05:12:08,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500298062] [2020-11-07 05:12:08,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-07 05:12:08,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:12:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-07 05:12:08,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 05:12:08,589 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 64 states. [2020-11-07 05:12:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:12:26,837 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2020-11-07 05:12:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-11-07 05:12:26,838 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 228 [2020-11-07 05:12:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:12:26,840 INFO L225 Difference]: With dead ends: 153 [2020-11-07 05:12:26,840 INFO L226 Difference]: Without dead ends: 147 [2020-11-07 05:12:26,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4065 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=579, Invalid=23291, Unknown=0, NotChecked=0, Total=23870 [2020-11-07 05:12:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-07 05:12:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-11-07 05:12:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-07 05:12:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-11-07 05:12:26,862 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 228 [2020-11-07 05:12:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:12:26,863 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-11-07 05:12:26,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-07 05:12:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-11-07 05:12:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-07 05:12:26,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:12:26,865 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] [2020-11-07 05:12:26,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-07 05:12:26,865 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:12:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:12:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash 425616687, now seen corresponding path program 30 times [2020-11-07 05:12:26,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:12:26,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550236727] [2020-11-07 05:12:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:12:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:12:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:12:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:29,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:30,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:32,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-11-07 05:12:32,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550236727] [2020-11-07 05:12:32,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:12:32,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-11-07 05:12:32,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824590340] [2020-11-07 05:12:32,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-07 05:12:32,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:12:32,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-07 05:12:32,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2020-11-07 05:12:32,969 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 66 states. [2020-11-07 05:12:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:12:52,244 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-11-07 05:12:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-07 05:12:52,245 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 235 [2020-11-07 05:12:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:12:52,247 INFO L225 Difference]: With dead ends: 157 [2020-11-07 05:12:52,247 INFO L226 Difference]: Without dead ends: 151 [2020-11-07 05:12:52,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=598, Invalid=24842, Unknown=0, NotChecked=0, Total=25440 [2020-11-07 05:12:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-07 05:12:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-11-07 05:12:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-07 05:12:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-11-07 05:12:52,269 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 235 [2020-11-07 05:12:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:12:52,269 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-11-07 05:12:52,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-07 05:12:52,270 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-11-07 05:12:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-07 05:12:52,271 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:12:52,271 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] [2020-11-07 05:12:52,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-07 05:12:52,272 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:12:52,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:12:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1368092217, now seen corresponding path program 31 times [2020-11-07 05:12:52,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:12:52,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226716285] [2020-11-07 05:12:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:12:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:12:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:12:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:54,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:58,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:12:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:12:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-11-07 05:12:59,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226716285] [2020-11-07 05:12:59,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:12:59,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-11-07 05:12:59,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402865379] [2020-11-07 05:12:59,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-07 05:12:59,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:12:59,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-07 05:12:59,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 05:12:59,067 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 68 states. [2020-11-07 05:13:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:13:19,907 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2020-11-07 05:13:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-11-07 05:13:19,908 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 242 [2020-11-07 05:13:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:13:19,911 INFO L225 Difference]: With dead ends: 161 [2020-11-07 05:13:19,911 INFO L226 Difference]: Without dead ends: 155 [2020-11-07 05:13:19,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=617, Invalid=26443, Unknown=0, NotChecked=0, Total=27060 [2020-11-07 05:13:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-07 05:13:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-11-07 05:13:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-07 05:13:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-11-07 05:13:19,935 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 242 [2020-11-07 05:13:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:13:19,936 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-11-07 05:13:19,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-07 05:13:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-11-07 05:13:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-11-07 05:13:19,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:13:19,938 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] [2020-11-07 05:13:19,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-07 05:13:19,938 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:13:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:13:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1645220423, now seen corresponding path program 32 times [2020-11-07 05:13:19,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:13:19,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214350373] [2020-11-07 05:13:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:13:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:13:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:13:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:21,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:22,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:23,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:24,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-11-07 05:13:27,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214350373] [2020-11-07 05:13:27,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:13:27,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-11-07 05:13:27,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395241922] [2020-11-07 05:13:27,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-07 05:13:27,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:13:27,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-07 05:13:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 05:13:27,877 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 70 states. [2020-11-07 05:13:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:13:50,102 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2020-11-07 05:13:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-11-07 05:13:50,103 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 249 [2020-11-07 05:13:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:13:50,105 INFO L225 Difference]: With dead ends: 165 [2020-11-07 05:13:50,105 INFO L226 Difference]: Without dead ends: 159 [2020-11-07 05:13:50,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4917 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=636, Invalid=28094, Unknown=0, NotChecked=0, Total=28730 [2020-11-07 05:13:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-07 05:13:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-11-07 05:13:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-07 05:13:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-11-07 05:13:50,126 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 249 [2020-11-07 05:13:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:13:50,127 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-11-07 05:13:50,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-07 05:13:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-11-07 05:13:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-11-07 05:13:50,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:13:50,129 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] [2020-11-07 05:13:50,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-07 05:13:50,129 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:13:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:13:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash 411693315, now seen corresponding path program 33 times [2020-11-07 05:13:50,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:13:50,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940873936] [2020-11-07 05:13:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:13:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:13:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:13:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:52,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:52,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:52,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:54,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:54,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:56,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:13:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:13:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-11-07 05:13:58,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940873936] [2020-11-07 05:13:58,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:13:58,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-11-07 05:13:58,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045298809] [2020-11-07 05:13:58,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-07 05:13:58,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:13:58,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-07 05:13:58,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 05:13:58,020 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 72 states. [2020-11-07 05:14:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:14:21,812 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2020-11-07 05:14:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-11-07 05:14:21,813 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 256 [2020-11-07 05:14:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:14:21,815 INFO L225 Difference]: With dead ends: 169 [2020-11-07 05:14:21,815 INFO L226 Difference]: Without dead ends: 163 [2020-11-07 05:14:21,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5219 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=655, Invalid=29795, Unknown=0, NotChecked=0, Total=30450 [2020-11-07 05:14:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-07 05:14:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-07 05:14:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-07 05:14:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-11-07 05:14:21,837 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 256 [2020-11-07 05:14:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:14:21,837 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-11-07 05:14:21,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-07 05:14:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-11-07 05:14:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-11-07 05:14:21,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:14:21,840 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] [2020-11-07 05:14:21,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-07 05:14:21,840 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:14:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:14:21,841 INFO L82 PathProgramCache]: Analyzing trace with hash 206046275, now seen corresponding path program 34 times [2020-11-07 05:14:21,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:14:21,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714436767] [2020-11-07 05:14:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:14:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:14:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:14:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:24,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:28,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:28,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-11-07 05:14:30,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714436767] [2020-11-07 05:14:30,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:14:30,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-11-07 05:14:30,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323257335] [2020-11-07 05:14:30,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-07 05:14:30,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:14:30,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-07 05:14:30,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 05:14:30,397 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 74 states. [2020-11-07 05:14:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:14:55,529 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2020-11-07 05:14:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-11-07 05:14:55,530 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 263 [2020-11-07 05:14:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:14:55,532 INFO L225 Difference]: With dead ends: 173 [2020-11-07 05:14:55,532 INFO L226 Difference]: Without dead ends: 167 [2020-11-07 05:14:55,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5530 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=674, Invalid=31546, Unknown=0, NotChecked=0, Total=32220 [2020-11-07 05:14:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-07 05:14:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-11-07 05:14:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-07 05:14:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-11-07 05:14:55,556 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 263 [2020-11-07 05:14:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:14:55,556 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-11-07 05:14:55,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-07 05:14:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-11-07 05:14:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-11-07 05:14:55,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:14:55,559 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] [2020-11-07 05:14:55,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-07 05:14:55,559 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:14:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:14:55,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1711517235, now seen corresponding path program 35 times [2020-11-07 05:14:55,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:14:55,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150928109] [2020-11-07 05:14:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:14:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:14:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:14:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:58,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:58,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:14:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:14:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:00,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:01,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:04,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-11-07 05:15:05,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150928109] [2020-11-07 05:15:05,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:15:05,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-11-07 05:15:05,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314617269] [2020-11-07 05:15:05,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-07 05:15:05,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-07 05:15:05,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 05:15:05,082 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 76 states. [2020-11-07 05:15:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:34,165 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-11-07 05:15:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-11-07 05:15:34,167 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 270 [2020-11-07 05:15:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:34,168 INFO L225 Difference]: With dead ends: 177 [2020-11-07 05:15:34,169 INFO L226 Difference]: Without dead ends: 171 [2020-11-07 05:15:34,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5850 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=693, Invalid=33347, Unknown=0, NotChecked=0, Total=34040 [2020-11-07 05:15:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-07 05:15:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-11-07 05:15:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-07 05:15:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-11-07 05:15:34,192 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 270 [2020-11-07 05:15:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:34,193 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-11-07 05:15:34,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-07 05:15:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-11-07 05:15:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-11-07 05:15:34,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:34,195 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] [2020-11-07 05:15:34,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-07 05:15:34,196 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2032752435, now seen corresponding path program 36 times [2020-11-07 05:15:34,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:34,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071409446] [2020-11-07 05:15:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:15:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:37,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:39,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:41,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:42,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:15:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-11-07 05:15:44,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071409446] [2020-11-07 05:15:44,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:15:44,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-11-07 05:15:44,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289804654] [2020-11-07 05:15:44,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-07 05:15:44,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:44,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-07 05:15:44,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 05:15:44,137 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 78 states. [2020-11-07 05:16:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:14,171 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-11-07 05:16:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-11-07 05:16:14,173 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 277 [2020-11-07 05:16:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:14,176 INFO L225 Difference]: With dead ends: 181 [2020-11-07 05:16:14,176 INFO L226 Difference]: Without dead ends: 175 [2020-11-07 05:16:14,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6179 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=712, Invalid=35198, Unknown=0, NotChecked=0, Total=35910 [2020-11-07 05:16:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-07 05:16:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-11-07 05:16:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-07 05:16:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-11-07 05:16:14,198 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 277 [2020-11-07 05:16:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:14,199 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-11-07 05:16:14,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-07 05:16:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-11-07 05:16:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-11-07 05:16:14,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:14,201 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] [2020-11-07 05:16:14,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-07 05:16:14,202 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:14,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1652986007, now seen corresponding path program 37 times [2020-11-07 05:16:14,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:14,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729613672] [2020-11-07 05:16:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:16:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:16,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:17,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:19,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-11-07 05:16:25,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729613672] [2020-11-07 05:16:25,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:16:25,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-11-07 05:16:25,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89066242] [2020-11-07 05:16:25,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-07 05:16:25,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:25,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-07 05:16:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 05:16:25,138 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 80 states. [2020-11-07 05:16:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:56,583 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2020-11-07 05:16:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-11-07 05:16:56,585 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 284 [2020-11-07 05:16:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:56,587 INFO L225 Difference]: With dead ends: 185 [2020-11-07 05:16:56,587 INFO L226 Difference]: Without dead ends: 179 [2020-11-07 05:16:56,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6517 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=731, Invalid=37099, Unknown=0, NotChecked=0, Total=37830 [2020-11-07 05:16:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-07 05:16:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-11-07 05:16:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-07 05:16:56,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2020-11-07 05:16:56,609 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 284 [2020-11-07 05:16:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:56,609 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2020-11-07 05:16:56,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-07 05:16:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2020-11-07 05:16:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-11-07 05:16:56,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:56,612 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] [2020-11-07 05:16:56,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-07 05:16:56,612 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:56,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1670110039, now seen corresponding path program 38 times [2020-11-07 05:16:56,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:56,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029713834] [2020-11-07 05:16:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:16:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:57,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:16:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:01,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:03,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:05,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:05,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:07,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-11-07 05:17:08,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029713834] [2020-11-07 05:17:08,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:17:08,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-11-07 05:17:08,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271824318] [2020-11-07 05:17:08,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-07 05:17:08,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:17:08,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-07 05:17:08,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 05:17:08,476 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 82 states. [2020-11-07 05:17:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:17:40,052 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2020-11-07 05:17:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-11-07 05:17:40,053 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 291 [2020-11-07 05:17:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:17:40,055 INFO L225 Difference]: With dead ends: 189 [2020-11-07 05:17:40,055 INFO L226 Difference]: Without dead ends: 183 [2020-11-07 05:17:40,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=750, Invalid=39050, Unknown=0, NotChecked=0, Total=39800 [2020-11-07 05:17:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-07 05:17:40,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-11-07 05:17:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 05:17:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-11-07 05:17:40,075 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 291 [2020-11-07 05:17:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:17:40,076 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-11-07 05:17:40,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-07 05:17:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-11-07 05:17:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-11-07 05:17:40,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:17:40,078 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] [2020-11-07 05:17:40,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-07 05:17:40,078 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:17:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:17:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2025018015, now seen corresponding path program 39 times [2020-11-07 05:17:40,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:17:40,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080335257] [2020-11-07 05:17:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:17:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:17:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:17:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:41,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:42,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:43,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:43,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:46,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:47,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:50,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:17:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:17:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-11-07 05:17:52,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080335257] [2020-11-07 05:17:52,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:17:52,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-11-07 05:17:52,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175127950] [2020-11-07 05:17:52,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-07 05:17:52,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:17:52,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-07 05:17:52,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2020-11-07 05:17:52,574 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 84 states. [2020-11-07 05:18:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:18:27,528 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2020-11-07 05:18:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-11-07 05:18:27,529 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 298 [2020-11-07 05:18:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:18:27,531 INFO L225 Difference]: With dead ends: 193 [2020-11-07 05:18:27,531 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 05:18:27,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7220 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=769, Invalid=41051, Unknown=0, NotChecked=0, Total=41820 [2020-11-07 05:18:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 05:18:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-07 05:18:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 05:18:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-11-07 05:18:27,564 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 298 [2020-11-07 05:18:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:18:27,565 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-11-07 05:18:27,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-07 05:18:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-11-07 05:18:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-11-07 05:18:27,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:18:27,567 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] [2020-11-07 05:18:27,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-07 05:18:27,568 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:18:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:18:27,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1948804127, now seen corresponding path program 40 times [2020-11-07 05:18:27,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:18:27,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225180885] [2020-11-07 05:18:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:18:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:18:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:18:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:27,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:28,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:29,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:30,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:31,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:32,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:34,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:36,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:37,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:38,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:18:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:18:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-11-07 05:18:40,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225180885] [2020-11-07 05:18:40,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:18:40,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-11-07 05:18:40,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935126166] [2020-11-07 05:18:40,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-07 05:18:40,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:18:40,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-07 05:18:40,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2020-11-07 05:18:40,727 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 86 states. [2020-11-07 05:19:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:19:18,665 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2020-11-07 05:19:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-11-07 05:19:18,667 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 305 [2020-11-07 05:19:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:19:18,669 INFO L225 Difference]: With dead ends: 197 [2020-11-07 05:19:18,669 INFO L226 Difference]: Without dead ends: 191 [2020-11-07 05:19:18,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=788, Invalid=43102, Unknown=0, NotChecked=0, Total=43890 [2020-11-07 05:19:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-07 05:19:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-11-07 05:19:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-07 05:19:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2020-11-07 05:19:18,694 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 305 [2020-11-07 05:19:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:19:18,694 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2020-11-07 05:19:18,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-07 05:19:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2020-11-07 05:19:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-11-07 05:19:18,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:19:18,697 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] [2020-11-07 05:19:18,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-07 05:19:18,697 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:19:18,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:19:18,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1173530667, now seen corresponding path program 41 times [2020-11-07 05:19:18,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:19:18,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761114749] [2020-11-07 05:19:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:19:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:18,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:19:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:19:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:19,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:20,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:23,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:23,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:25,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:30,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:19:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:19:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-11-07 05:19:32,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761114749] [2020-11-07 05:19:32,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:19:32,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-11-07 05:19:32,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074511787] [2020-11-07 05:19:32,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-07 05:19:32,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:19:32,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-07 05:19:32,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 05:19:32,969 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 88 states. [2020-11-07 05:20:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:15,754 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2020-11-07 05:20:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-11-07 05:20:15,756 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 312 [2020-11-07 05:20:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:15,758 INFO L225 Difference]: With dead ends: 201 [2020-11-07 05:20:15,758 INFO L226 Difference]: Without dead ends: 195 [2020-11-07 05:20:15,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7959 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=807, Invalid=45203, Unknown=0, NotChecked=0, Total=46010 [2020-11-07 05:20:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-07 05:20:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-11-07 05:20:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-07 05:20:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2020-11-07 05:20:15,785 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 312 [2020-11-07 05:20:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:15,786 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2020-11-07 05:20:15,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-07 05:20:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2020-11-07 05:20:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-11-07 05:20:15,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:15,788 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] [2020-11-07 05:20:15,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-07 05:20:15,788 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash -592844181, now seen corresponding path program 42 times [2020-11-07 05:20:15,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:15,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846900505] [2020-11-07 05:20:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 05:20:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:16,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:16,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:17,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:17,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:18,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:20,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:24,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:25,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:25,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:26,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 05:20:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-11-07 05:20:31,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846900505] [2020-11-07 05:20:31,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:20:31,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-11-07 05:20:31,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303855629] [2020-11-07 05:20:31,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-07 05:20:31,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:31,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-07 05:20:31,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 05:20:31,786 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 90 states.