/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:01:55,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:01:55,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:01:55,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-07 14:01:55,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:01:55,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:01:55,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:01:55,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:01:55,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:01:55,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:01:55,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:01:55,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:01:55,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:01:55,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:01:55,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:01:55,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:01:55,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 14:01:55,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:01:55,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:01:55,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:01:55,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:01:55,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:01:55,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:01:55,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:01:55,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:01:55,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:01:55,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:01:55,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:01:55,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:01:55,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:01:55,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:01:55,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:01:55,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:01:55,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:01:55,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:01:55,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:01:55,722 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:01:55,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:01:55,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:01:55,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:01:55,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:01:55,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:01:55,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:01:55,725 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:01:56,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:01:56,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:01:56,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:01:56,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:01:56,042 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:01:56,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-07-07 14:01:56,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246354df8/ba7fd92b00814c0bab580847c1949f8b/FLAG27e62a169 [2020-07-07 14:01:56,542 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:01:56,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-07-07 14:01:56,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246354df8/ba7fd92b00814c0bab580847c1949f8b/FLAG27e62a169 [2020-07-07 14:01:56,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/246354df8/ba7fd92b00814c0bab580847c1949f8b [2020-07-07 14:01:56,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:01:56,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:01:56,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:56,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:01:56,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:01:57,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:56" (1/1) ... [2020-07-07 14:01:57,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4616ccfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57, skipping insertion in model container [2020-07-07 14:01:57,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:56" (1/1) ... [2020-07-07 14:01:57,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:01:57,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:01:57,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:57,198 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:01:57,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:57,230 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:01:57,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57 WrapperNode [2020-07-07 14:01:57,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:57,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:01:57,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:01:57,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:01:57,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (1/1) ... [2020-07-07 14:01:57,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:01:57,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:01:57,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:01:57,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:01:57,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (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 [2020-07-07 14:01:57,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:01:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:01:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:01:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:01:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:01:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:01:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:01:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:01:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:01:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:01:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:01:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:01:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:01:57,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:01:57,642 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:01:57,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:57 BoogieIcfgContainer [2020-07-07 14:01:57,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:01:57,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:01:57,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:01:57,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:01:57,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:01:56" (1/3) ... [2020-07-07 14:01:57,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427a1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:57, skipping insertion in model container [2020-07-07 14:01:57,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:57" (2/3) ... [2020-07-07 14:01:57,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427a1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:57, skipping insertion in model container [2020-07-07 14:01:57,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:57" (3/3) ... [2020-07-07 14:01:57,655 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-07-07 14:01:57,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:01:57,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:01:57,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:01:57,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:01:57,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:01:57,768 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:01:57,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:01:57,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:01:57,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:01:57,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:01:57,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:01:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-07 14:01:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 14:01:57,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:57,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:57,797 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:57,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-07-07 14:01:57,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:57,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170077649] [2020-07-07 14:01:57,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:58,090 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:58,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170077649] [2020-07-07 14:01:58,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:58,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 14:01:58,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122328020] [2020-07-07 14:01:58,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 14:01:58,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 14:01:58,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 14:01:58,128 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-07 14:01:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:58,271 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-07-07 14:01:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 14:01:58,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-07 14:01:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:58,281 INFO L225 Difference]: With dead ends: 46 [2020-07-07 14:01:58,282 INFO L226 Difference]: Without dead ends: 25 [2020-07-07 14:01:58,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-07 14:01:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-07-07 14:01:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 14:01:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-07 14:01:58,327 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-07-07 14:01:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:58,328 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-07 14:01:58,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 14:01:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-07 14:01:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 14:01:58,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:58,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:58,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:01:58,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-07-07 14:01:58,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:58,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163883076] [2020-07-07 14:01:58,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:58,450 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:58,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163883076] [2020-07-07 14:01:58,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:58,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 14:01:58,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040462863] [2020-07-07 14:01:58,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 14:01:58,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:58,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 14:01:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 14:01:58,454 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-07-07 14:01:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:58,572 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-07 14:01:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 14:01:58,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-07-07 14:01:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:58,575 INFO L225 Difference]: With dead ends: 36 [2020-07-07 14:01:58,575 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 14:01:58,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:01:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 14:01:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-07 14:01:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 14:01:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-07 14:01:58,590 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-07-07 14:01:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:58,590 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-07 14:01:58,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 14:01:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-07 14:01:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 14:01:58,592 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:58,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:58,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:01:58,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-07-07 14:01:58,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:58,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894663217] [2020-07-07 14:01:58,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:58,728 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:58,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894663217] [2020-07-07 14:01:58,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:58,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:01:58,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677272190] [2020-07-07 14:01:58,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:01:58,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:58,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:01:58,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:01:58,731 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-07-07 14:01:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:58,900 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-07-07 14:01:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 14:01:58,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-07 14:01:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:58,902 INFO L225 Difference]: With dead ends: 45 [2020-07-07 14:01:58,903 INFO L226 Difference]: Without dead ends: 43 [2020-07-07 14:01:58,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:01:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-07 14:01:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-07 14:01:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-07 14:01:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-07-07 14:01:58,917 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-07-07 14:01:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:58,918 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-07-07 14:01:58,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:01:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-07-07 14:01:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 14:01:58,920 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:58,921 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:58,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:01:58,921 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:58,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:58,922 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-07-07 14:01:58,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:58,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031018262] [2020-07-07 14:01:58,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:59,088 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:59,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031018262] [2020-07-07 14:01:59,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:59,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 14:01:59,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225134938] [2020-07-07 14:01:59,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 14:01:59,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:59,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 14:01:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-07 14:01:59,091 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-07-07 14:01:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:59,282 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-07-07 14:01:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 14:01:59,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-07-07 14:01:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:59,285 INFO L225 Difference]: With dead ends: 54 [2020-07-07 14:01:59,285 INFO L226 Difference]: Without dead ends: 52 [2020-07-07 14:01:59,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-07-07 14:01:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-07 14:01:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-07 14:01:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-07 14:01:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-07-07 14:01:59,313 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-07-07 14:01:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:59,313 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-07-07 14:01:59,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 14:01:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-07-07 14:01:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-07 14:01:59,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:59,316 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:59,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:01:59,317 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:59,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-07-07 14:01:59,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:59,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179878258] [2020-07-07 14:01:59,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:59,499 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:59,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179878258] [2020-07-07 14:01:59,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:59,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 14:01:59,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239606249] [2020-07-07 14:01:59,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 14:01:59,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:59,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 14:01:59,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-07-07 14:01:59,502 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-07-07 14:01:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:59,707 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-07 14:01:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 14:01:59,707 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-07-07 14:01:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:59,709 INFO L225 Difference]: With dead ends: 63 [2020-07-07 14:01:59,709 INFO L226 Difference]: Without dead ends: 61 [2020-07-07 14:01:59,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-07-07 14:01:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-07 14:01:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-07 14:01:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-07 14:01:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-07-07 14:01:59,719 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-07-07 14:01:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:59,720 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-07-07 14:01:59,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 14:01:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-07-07 14:01:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-07 14:01:59,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:59,726 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:59,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:01:59,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-07-07 14:01:59,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:59,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287267131] [2020-07-07 14:01:59,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:59,970 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:59,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287267131] [2020-07-07 14:01:59,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:59,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 14:01:59,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949757583] [2020-07-07 14:01:59,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 14:01:59,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 14:01:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-07 14:01:59,973 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-07-07 14:02:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:00,245 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-07-07 14:02:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 14:02:00,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-07-07 14:02:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:00,247 INFO L225 Difference]: With dead ends: 72 [2020-07-07 14:02:00,247 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 14:02:00,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-07-07 14:02:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 14:02:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-07 14:02:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-07 14:02:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-07-07 14:02:00,259 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-07-07 14:02:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:00,259 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-07-07 14:02:00,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 14:02:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-07-07 14:02:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-07 14:02:00,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:00,262 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:00,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:02:00,262 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:00,263 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-07-07 14:02:00,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:00,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209726920] [2020-07-07 14:02:00,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:00,483 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:00,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209726920] [2020-07-07 14:02:00,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:00,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 14:02:00,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805931161] [2020-07-07 14:02:00,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 14:02:00,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:00,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 14:02:00,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-07-07 14:02:00,487 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-07-07 14:02:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:00,789 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-07-07 14:02:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:02:00,790 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-07-07 14:02:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:00,792 INFO L225 Difference]: With dead ends: 81 [2020-07-07 14:02:00,792 INFO L226 Difference]: Without dead ends: 79 [2020-07-07 14:02:00,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-07-07 14:02:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-07 14:02:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-07 14:02:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-07 14:02:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-07-07 14:02:00,803 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-07-07 14:02:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:00,804 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-07-07 14:02:00,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 14:02:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-07-07 14:02:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-07 14:02:00,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:00,806 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:00,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:02:00,806 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:00,806 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-07-07 14:02:00,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:00,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243530066] [2020-07-07 14:02:00,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:01,031 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:01,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243530066] [2020-07-07 14:02:01,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:01,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-07 14:02:01,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386770726] [2020-07-07 14:02:01,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 14:02:01,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 14:02:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-07-07 14:02:01,034 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-07-07 14:02:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:01,424 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-07-07 14:02:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-07 14:02:01,431 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-07-07 14:02:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:01,432 INFO L225 Difference]: With dead ends: 90 [2020-07-07 14:02:01,432 INFO L226 Difference]: Without dead ends: 88 [2020-07-07 14:02:01,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 14:02:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-07 14:02:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-07 14:02:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-07 14:02:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-07-07 14:02:01,450 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-07-07 14:02:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:01,451 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-07-07 14:02:01,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 14:02:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-07-07 14:02:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-07 14:02:01,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:01,456 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:01,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:02:01,456 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:01,458 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-07-07 14:02:01,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:01,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239060208] [2020-07-07 14:02:01,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:01,793 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:01,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239060208] [2020-07-07 14:02:01,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:01,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-07 14:02:01,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937693375] [2020-07-07 14:02:01,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 14:02:01,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:01,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 14:02:01,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-07-07 14:02:01,802 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-07-07 14:02:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:02,209 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-07-07 14:02:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 14:02:02,210 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-07-07 14:02:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:02,211 INFO L225 Difference]: With dead ends: 99 [2020-07-07 14:02:02,211 INFO L226 Difference]: Without dead ends: 97 [2020-07-07 14:02:02,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 14:02:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-07 14:02:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-07 14:02:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-07 14:02:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-07-07 14:02:02,240 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-07-07 14:02:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:02,241 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-07-07 14:02:02,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 14:02:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-07-07 14:02:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-07 14:02:02,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:02,244 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:02,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 14:02:02,245 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:02,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-07-07 14:02:02,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:02,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132224073] [2020-07-07 14:02:02,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:02,564 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:02,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132224073] [2020-07-07 14:02:02,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:02,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-07 14:02:02,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057096257] [2020-07-07 14:02:02,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-07 14:02:02,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-07 14:02:02,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-07-07 14:02:02,566 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-07-07 14:02:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:03,019 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-07-07 14:02:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-07 14:02:03,020 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-07-07 14:02:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:03,021 INFO L225 Difference]: With dead ends: 108 [2020-07-07 14:02:03,021 INFO L226 Difference]: Without dead ends: 106 [2020-07-07 14:02:03,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 14:02:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-07 14:02:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-07 14:02:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-07 14:02:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-07-07 14:02:03,033 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-07-07 14:02:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:03,033 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-07-07 14:02:03,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-07 14:02:03,033 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-07-07 14:02:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-07 14:02:03,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:03,035 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:03,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 14:02:03,035 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-07-07 14:02:03,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:03,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681064298] [2020-07-07 14:02:03,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:03,425 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:03,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681064298] [2020-07-07 14:02:03,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:03,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-07 14:02:03,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865464769] [2020-07-07 14:02:03,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 14:02:03,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:03,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 14:02:03,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-07-07 14:02:03,429 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-07-07 14:02:04,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:04,002 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-07-07 14:02:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 14:02:04,002 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-07-07 14:02:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:04,004 INFO L225 Difference]: With dead ends: 117 [2020-07-07 14:02:04,004 INFO L226 Difference]: Without dead ends: 115 [2020-07-07 14:02:04,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 14:02:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-07 14:02:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-07 14:02:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-07 14:02:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-07-07 14:02:04,015 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-07-07 14:02:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:04,016 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-07-07 14:02:04,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 14:02:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-07-07 14:02:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-07 14:02:04,017 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:04,017 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:04,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 14:02:04,018 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-07-07 14:02:04,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:04,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121192310] [2020-07-07 14:02:04,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:04,409 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:04,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121192310] [2020-07-07 14:02:04,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:04,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-07 14:02:04,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022705111] [2020-07-07 14:02:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-07 14:02:04,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-07 14:02:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-07-07 14:02:04,411 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 27 states. [2020-07-07 14:02:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:05,039 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2020-07-07 14:02:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-07 14:02:05,040 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-07-07 14:02:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:05,041 INFO L225 Difference]: With dead ends: 126 [2020-07-07 14:02:05,041 INFO L226 Difference]: Without dead ends: 124 [2020-07-07 14:02:05,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2020-07-07 14:02:05,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-07 14:02:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-07 14:02:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-07 14:02:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-07-07 14:02:05,059 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-07-07 14:02:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:05,059 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-07-07 14:02:05,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-07 14:02:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-07-07 14:02:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-07 14:02:05,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:05,062 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:05,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 14:02:05,062 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash 746193170, now seen corresponding path program 12 times [2020-07-07 14:02:05,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:05,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380098729] [2020-07-07 14:02:05,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:05,459 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:05,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380098729] [2020-07-07 14:02:05,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:05,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-07-07 14:02:05,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677475776] [2020-07-07 14:02:05,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-07 14:02:05,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:05,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-07 14:02:05,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-07-07 14:02:05,461 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 29 states. [2020-07-07 14:02:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:06,128 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-07-07 14:02:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-07 14:02:06,129 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-07-07 14:02:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:06,130 INFO L225 Difference]: With dead ends: 135 [2020-07-07 14:02:06,130 INFO L226 Difference]: Without dead ends: 133 [2020-07-07 14:02:06,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=851, Invalid=2011, Unknown=0, NotChecked=0, Total=2862 [2020-07-07 14:02:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-07 14:02:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-07 14:02:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-07 14:02:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-07-07 14:02:06,150 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-07-07 14:02:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:06,151 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-07-07 14:02:06,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-07 14:02:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-07-07 14:02:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-07 14:02:06,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:06,153 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:06,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 14:02:06,154 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:06,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:06,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1981783086, now seen corresponding path program 13 times [2020-07-07 14:02:06,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:06,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142200572] [2020-07-07 14:02:06,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:06,650 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:06,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142200572] [2020-07-07 14:02:06,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:06,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-07-07 14:02:06,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342300553] [2020-07-07 14:02:06,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-07 14:02:06,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:06,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-07 14:02:06,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-07-07 14:02:06,653 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 31 states. [2020-07-07 14:02:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:07,484 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2020-07-07 14:02:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-07 14:02:07,484 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-07-07 14:02:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:07,486 INFO L225 Difference]: With dead ends: 144 [2020-07-07 14:02:07,486 INFO L226 Difference]: Without dead ends: 142 [2020-07-07 14:02:07,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=986, Invalid=2320, Unknown=0, NotChecked=0, Total=3306 [2020-07-07 14:02:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-07 14:02:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-07 14:02:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-07 14:02:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-07-07 14:02:07,504 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-07-07 14:02:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:07,504 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-07-07 14:02:07,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-07 14:02:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-07-07 14:02:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-07 14:02:07,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:07,508 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:07,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 14:02:07,508 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:07,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1705033874, now seen corresponding path program 14 times [2020-07-07 14:02:07,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:07,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333546268] [2020-07-07 14:02:07,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:08,074 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:08,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333546268] [2020-07-07 14:02:08,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:08,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-07 14:02:08,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033833057] [2020-07-07 14:02:08,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 14:02:08,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 14:02:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:02:08,077 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 33 states. [2020-07-07 14:02:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:09,284 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-07-07 14:02:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-07 14:02:09,285 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2020-07-07 14:02:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:09,287 INFO L225 Difference]: With dead ends: 153 [2020-07-07 14:02:09,287 INFO L226 Difference]: Without dead ends: 151 [2020-07-07 14:02:09,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1131, Invalid=2651, Unknown=0, NotChecked=0, Total=3782 [2020-07-07 14:02:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-07 14:02:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-07 14:02:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-07 14:02:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-07-07 14:02:09,310 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-07-07 14:02:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:09,311 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-07-07 14:02:09,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 14:02:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-07-07 14:02:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-07 14:02:09,315 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:09,315 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:09,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 14:02:09,315 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash 400051374, now seen corresponding path program 15 times [2020-07-07 14:02:09,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:09,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523984765] [2020-07-07 14:02:09,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:10,014 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:10,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523984765] [2020-07-07 14:02:10,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:10,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-07-07 14:02:10,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452188444] [2020-07-07 14:02:10,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-07 14:02:10,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:10,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-07 14:02:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 14:02:10,017 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 35 states. [2020-07-07 14:02:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:10,980 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-07-07 14:02:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-07 14:02:10,981 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 146 [2020-07-07 14:02:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:10,983 INFO L225 Difference]: With dead ends: 162 [2020-07-07 14:02:10,983 INFO L226 Difference]: Without dead ends: 160 [2020-07-07 14:02:10,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1286, Invalid=3004, Unknown=0, NotChecked=0, Total=4290 [2020-07-07 14:02:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-07 14:02:10,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-07 14:02:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-07 14:02:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-07-07 14:02:10,996 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-07-07 14:02:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:10,997 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-07-07 14:02:10,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-07 14:02:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-07-07 14:02:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-07 14:02:10,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:10,999 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:11,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 14:02:11,000 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:11,000 INFO L82 PathProgramCache]: Analyzing trace with hash -714694638, now seen corresponding path program 16 times [2020-07-07 14:02:11,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:11,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973362873] [2020-07-07 14:02:11,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:11,665 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:11,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973362873] [2020-07-07 14:02:11,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:11,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-07-07 14:02:11,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894125558] [2020-07-07 14:02:11,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-07 14:02:11,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:11,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-07 14:02:11,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 14:02:11,669 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 37 states. [2020-07-07 14:02:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:12,712 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-07-07 14:02:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-07 14:02:12,712 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 155 [2020-07-07 14:02:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:12,715 INFO L225 Difference]: With dead ends: 171 [2020-07-07 14:02:12,715 INFO L226 Difference]: Without dead ends: 169 [2020-07-07 14:02:12,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1451, Invalid=3379, Unknown=0, NotChecked=0, Total=4830 [2020-07-07 14:02:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-07 14:02:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-07 14:02:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-07 14:02:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-07-07 14:02:12,727 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-07-07 14:02:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:12,728 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-07-07 14:02:12,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-07 14:02:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-07-07 14:02:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-07 14:02:12,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:12,730 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:12,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 14:02:12,731 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:12,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:12,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1275732690, now seen corresponding path program 17 times [2020-07-07 14:02:12,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:12,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992398500] [2020-07-07 14:02:12,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:13,421 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:13,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992398500] [2020-07-07 14:02:13,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:13,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-07-07 14:02:13,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744714608] [2020-07-07 14:02:13,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-07 14:02:13,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:13,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-07 14:02:13,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 14:02:13,424 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 39 states. [2020-07-07 14:02:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:14,590 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-07-07 14:02:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-07 14:02:14,593 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-07-07 14:02:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:14,594 INFO L225 Difference]: With dead ends: 180 [2020-07-07 14:02:14,594 INFO L226 Difference]: Without dead ends: 178 [2020-07-07 14:02:14,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1626, Invalid=3776, Unknown=0, NotChecked=0, Total=5402 [2020-07-07 14:02:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-07 14:02:14,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-07 14:02:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-07 14:02:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-07-07 14:02:14,607 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-07-07 14:02:14,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:14,608 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-07-07 14:02:14,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-07 14:02:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-07-07 14:02:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-07-07 14:02:14,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:14,610 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:14,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 14:02:14,611 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash -29122670, now seen corresponding path program 18 times [2020-07-07 14:02:14,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:14,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636605291] [2020-07-07 14:02:14,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:15,371 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:15,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636605291] [2020-07-07 14:02:15,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:15,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-07-07 14:02:15,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268276591] [2020-07-07 14:02:15,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-07 14:02:15,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:15,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-07 14:02:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 14:02:15,373 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 41 states. [2020-07-07 14:02:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:16,696 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-07-07 14:02:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-07 14:02:16,696 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 173 [2020-07-07 14:02:16,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:16,698 INFO L225 Difference]: With dead ends: 189 [2020-07-07 14:02:16,698 INFO L226 Difference]: Without dead ends: 187 [2020-07-07 14:02:16,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1811, Invalid=4195, Unknown=0, NotChecked=0, Total=6006 [2020-07-07 14:02:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-07 14:02:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-07 14:02:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-07 14:02:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-07-07 14:02:16,711 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-07-07 14:02:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:16,712 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-07-07 14:02:16,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-07 14:02:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-07-07 14:02:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-07 14:02:16,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:16,715 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:16,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 14:02:16,715 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 251678126, now seen corresponding path program 19 times [2020-07-07 14:02:16,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:16,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060392874] [2020-07-07 14:02:16,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:17,534 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:17,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060392874] [2020-07-07 14:02:17,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:17,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-07-07 14:02:17,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651995813] [2020-07-07 14:02:17,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-07 14:02:17,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-07 14:02:17,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 14:02:17,537 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 43 states. [2020-07-07 14:02:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:18,850 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-07-07 14:02:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-07 14:02:18,851 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2020-07-07 14:02:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:18,853 INFO L225 Difference]: With dead ends: 198 [2020-07-07 14:02:18,853 INFO L226 Difference]: Without dead ends: 196 [2020-07-07 14:02:18,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2006, Invalid=4636, Unknown=0, NotChecked=0, Total=6642 [2020-07-07 14:02:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-07 14:02:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-07 14:02:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-07 14:02:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-07-07 14:02:18,866 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-07-07 14:02:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:18,866 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-07-07 14:02:18,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-07 14:02:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-07-07 14:02:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-07 14:02:18,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:18,869 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:18,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 14:02:18,869 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:18,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1263550702, now seen corresponding path program 20 times [2020-07-07 14:02:18,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:18,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200226678] [2020-07-07 14:02:18,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:19,796 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:19,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200226678] [2020-07-07 14:02:19,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:19,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-07-07 14:02:19,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268575370] [2020-07-07 14:02:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-07 14:02:19,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:19,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-07 14:02:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 14:02:19,798 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 45 states. [2020-07-07 14:02:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:21,320 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-07-07 14:02:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-07 14:02:21,321 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 191 [2020-07-07 14:02:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:21,322 INFO L225 Difference]: With dead ends: 207 [2020-07-07 14:02:21,322 INFO L226 Difference]: Without dead ends: 205 [2020-07-07 14:02:21,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2211, Invalid=5099, Unknown=0, NotChecked=0, Total=7310 [2020-07-07 14:02:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-07 14:02:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-07 14:02:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-07 14:02:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-07-07 14:02:21,334 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-07-07 14:02:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:21,335 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-07-07 14:02:21,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-07 14:02:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-07-07 14:02:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 14:02:21,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:21,337 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:21,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 14:02:21,337 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:21,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:21,338 INFO L82 PathProgramCache]: Analyzing trace with hash -612393426, now seen corresponding path program 21 times [2020-07-07 14:02:21,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:21,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659116315] [2020-07-07 14:02:21,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:22,311 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:22,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659116315] [2020-07-07 14:02:22,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:22,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-07-07 14:02:22,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095056932] [2020-07-07 14:02:22,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-07 14:02:22,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-07 14:02:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 14:02:22,313 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 47 states. [2020-07-07 14:02:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:24,066 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2020-07-07 14:02:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-07 14:02:24,069 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 200 [2020-07-07 14:02:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:24,071 INFO L225 Difference]: With dead ends: 216 [2020-07-07 14:02:24,071 INFO L226 Difference]: Without dead ends: 214 [2020-07-07 14:02:24,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2426, Invalid=5584, Unknown=0, NotChecked=0, Total=8010 [2020-07-07 14:02:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-07 14:02:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-07 14:02:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-07 14:02:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-07-07 14:02:24,084 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-07-07 14:02:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:24,084 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-07-07 14:02:24,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-07 14:02:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-07-07 14:02:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 14:02:24,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:24,086 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:24,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 14:02:24,086 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:24,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1625096558, now seen corresponding path program 22 times [2020-07-07 14:02:24,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:24,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213374083] [2020-07-07 14:02:24,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:25,176 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:25,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213374083] [2020-07-07 14:02:25,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:25,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-07-07 14:02:25,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767160447] [2020-07-07 14:02:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-07 14:02:25,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-07 14:02:25,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 14:02:25,179 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 49 states. [2020-07-07 14:02:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:27,047 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2020-07-07 14:02:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-07 14:02:27,048 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 209 [2020-07-07 14:02:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:27,051 INFO L225 Difference]: With dead ends: 225 [2020-07-07 14:02:27,051 INFO L226 Difference]: Without dead ends: 223 [2020-07-07 14:02:27,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2651, Invalid=6091, Unknown=0, NotChecked=0, Total=8742 [2020-07-07 14:02:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-07 14:02:27,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-07 14:02:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-07 14:02:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-07-07 14:02:27,064 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-07-07 14:02:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:27,064 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-07-07 14:02:27,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-07 14:02:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-07-07 14:02:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-07-07 14:02:27,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:27,066 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:27,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-07 14:02:27,066 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash 972803758, now seen corresponding path program 23 times [2020-07-07 14:02:27,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:27,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133721760] [2020-07-07 14:02:27,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:28,284 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:28,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133721760] [2020-07-07 14:02:28,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:28,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-07-07 14:02:28,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900730158] [2020-07-07 14:02:28,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-07 14:02:28,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-07 14:02:28,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 14:02:28,289 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 51 states. [2020-07-07 14:02:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:30,286 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2020-07-07 14:02:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-07 14:02:30,287 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-07-07 14:02:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:30,289 INFO L225 Difference]: With dead ends: 234 [2020-07-07 14:02:30,289 INFO L226 Difference]: Without dead ends: 232 [2020-07-07 14:02:30,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2886, Invalid=6620, Unknown=0, NotChecked=0, Total=9506 [2020-07-07 14:02:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-07 14:02:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-07 14:02:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-07 14:02:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-07-07 14:02:30,302 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-07-07 14:02:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:30,303 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-07-07 14:02:30,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-07 14:02:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-07-07 14:02:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-07 14:02:30,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:30,305 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:30,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-07 14:02:30,306 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1240113646, now seen corresponding path program 24 times [2020-07-07 14:02:30,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:30,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789341951] [2020-07-07 14:02:30,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:31,564 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:31,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789341951] [2020-07-07 14:02:31,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:31,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-07-07 14:02:31,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094465954] [2020-07-07 14:02:31,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-07 14:02:31,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:31,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-07 14:02:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 14:02:31,566 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 53 states. [2020-07-07 14:02:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:33,716 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-07-07 14:02:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-07 14:02:33,717 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 227 [2020-07-07 14:02:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:33,719 INFO L225 Difference]: With dead ends: 243 [2020-07-07 14:02:33,719 INFO L226 Difference]: Without dead ends: 241 [2020-07-07 14:02:33,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3131, Invalid=7171, Unknown=0, NotChecked=0, Total=10302 [2020-07-07 14:02:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-07 14:02:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-07 14:02:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-07 14:02:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-07-07 14:02:33,737 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-07-07 14:02:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:33,738 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-07-07 14:02:33,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-07 14:02:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-07-07 14:02:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-07 14:02:33,740 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:33,740 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:33,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-07 14:02:33,740 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash 956096302, now seen corresponding path program 25 times [2020-07-07 14:02:33,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:33,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815748217] [2020-07-07 14:02:33,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:35,097 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:35,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815748217] [2020-07-07 14:02:35,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:35,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-07-07 14:02:35,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287855096] [2020-07-07 14:02:35,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-07 14:02:35,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-07 14:02:35,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 14:02:35,100 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 55 states. [2020-07-07 14:02:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:37,742 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2020-07-07 14:02:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-07 14:02:37,742 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 236 [2020-07-07 14:02:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:37,744 INFO L225 Difference]: With dead ends: 252 [2020-07-07 14:02:37,744 INFO L226 Difference]: Without dead ends: 250 [2020-07-07 14:02:37,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3386, Invalid=7744, Unknown=0, NotChecked=0, Total=11130 [2020-07-07 14:02:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-07 14:02:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-07 14:02:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-07 14:02:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-07-07 14:02:37,757 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-07-07 14:02:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:37,758 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-07-07 14:02:37,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-07 14:02:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-07-07 14:02:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-07 14:02:37,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:37,760 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:37,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-07 14:02:37,760 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:37,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1006707310, now seen corresponding path program 26 times [2020-07-07 14:02:37,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:37,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734283589] [2020-07-07 14:02:37,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:39,204 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:39,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734283589] [2020-07-07 14:02:39,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:39,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-07-07 14:02:39,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873030698] [2020-07-07 14:02:39,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-07 14:02:39,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:39,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-07 14:02:39,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 14:02:39,206 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 57 states. [2020-07-07 14:02:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:41,935 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-07-07 14:02:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-07 14:02:41,936 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 245 [2020-07-07 14:02:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:41,937 INFO L225 Difference]: With dead ends: 261 [2020-07-07 14:02:41,937 INFO L226 Difference]: Without dead ends: 259 [2020-07-07 14:02:41,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3651, Invalid=8339, Unknown=0, NotChecked=0, Total=11990 [2020-07-07 14:02:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-07 14:02:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-07 14:02:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-07 14:02:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-07-07 14:02:41,950 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-07-07 14:02:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:41,951 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-07-07 14:02:41,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-07 14:02:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-07-07 14:02:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-07 14:02:41,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:41,953 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:41,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-07 14:02:41,953 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:41,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1426771886, now seen corresponding path program 27 times [2020-07-07 14:02:41,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:41,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46357749] [2020-07-07 14:02:41,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:43,593 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:43,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46357749] [2020-07-07 14:02:43,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:43,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-07-07 14:02:43,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431033569] [2020-07-07 14:02:43,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-07 14:02:43,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:43,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-07 14:02:43,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2020-07-07 14:02:43,595 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 59 states. [2020-07-07 14:02:46,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:46,587 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2020-07-07 14:02:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-07 14:02:46,588 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 254 [2020-07-07 14:02:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:46,590 INFO L225 Difference]: With dead ends: 270 [2020-07-07 14:02:46,590 INFO L226 Difference]: Without dead ends: 268 [2020-07-07 14:02:46,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3926, Invalid=8956, Unknown=0, NotChecked=0, Total=12882 [2020-07-07 14:02:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-07 14:02:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-07 14:02:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-07 14:02:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-07-07 14:02:46,603 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-07-07 14:02:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:46,603 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-07-07 14:02:46,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-07 14:02:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-07-07 14:02:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-07 14:02:46,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:46,605 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:46,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-07 14:02:46,606 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash -447251182, now seen corresponding path program 28 times [2020-07-07 14:02:46,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:46,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320805675] [2020-07-07 14:02:46,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:48,315 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:48,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320805675] [2020-07-07 14:02:48,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:48,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-07-07 14:02:48,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904678781] [2020-07-07 14:02:48,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-07 14:02:48,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:48,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-07 14:02:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 14:02:48,318 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 61 states. [2020-07-07 14:02:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:51,295 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2020-07-07 14:02:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-07 14:02:51,296 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 263 [2020-07-07 14:02:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:51,299 INFO L225 Difference]: With dead ends: 279 [2020-07-07 14:02:51,299 INFO L226 Difference]: Without dead ends: 277 [2020-07-07 14:02:51,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4211, Invalid=9595, Unknown=0, NotChecked=0, Total=13806 [2020-07-07 14:02:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-07 14:02:51,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-07 14:02:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-07 14:02:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-07-07 14:02:51,313 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-07-07 14:02:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:51,315 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-07-07 14:02:51,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-07 14:02:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-07-07 14:02:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-07 14:02:51,317 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:51,317 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:51,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-07 14:02:51,318 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash -122838994, now seen corresponding path program 29 times [2020-07-07 14:02:51,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:51,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716587473] [2020-07-07 14:02:51,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:53,154 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:53,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716587473] [2020-07-07 14:02:53,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:53,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-07-07 14:02:53,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92132744] [2020-07-07 14:02:53,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-07 14:02:53,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:53,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-07 14:02:53,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2020-07-07 14:02:53,157 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 63 states. [2020-07-07 14:02:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:02:56,412 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-07-07 14:02:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-07-07 14:02:56,413 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 272 [2020-07-07 14:02:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:02:56,415 INFO L225 Difference]: With dead ends: 288 [2020-07-07 14:02:56,415 INFO L226 Difference]: Without dead ends: 286 [2020-07-07 14:02:56,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4506, Invalid=10256, Unknown=0, NotChecked=0, Total=14762 [2020-07-07 14:02:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-07 14:02:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-07 14:02:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-07 14:02:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-07-07 14:02:56,429 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-07-07 14:02:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:02:56,429 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-07-07 14:02:56,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-07 14:02:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-07-07 14:02:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-07-07 14:02:56,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:02:56,432 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:02:56,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-07 14:02:56,432 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:02:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:02:56,433 INFO L82 PathProgramCache]: Analyzing trace with hash 144129170, now seen corresponding path program 30 times [2020-07-07 14:02:56,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:02:56,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264593245] [2020-07-07 14:02:56,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:02:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:02:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:02:58,376 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:02:58,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264593245] [2020-07-07 14:02:58,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:02:58,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-07-07 14:02:58,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456897715] [2020-07-07 14:02:58,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-07 14:02:58,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:02:58,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-07 14:02:58,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2020-07-07 14:02:58,378 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 65 states. [2020-07-07 14:03:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:01,941 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2020-07-07 14:03:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-07-07 14:03:01,941 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 281 [2020-07-07 14:03:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:01,944 INFO L225 Difference]: With dead ends: 297 [2020-07-07 14:03:01,944 INFO L226 Difference]: Without dead ends: 295 [2020-07-07 14:03:01,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4811, Invalid=10939, Unknown=0, NotChecked=0, Total=15750 [2020-07-07 14:03:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-07-07 14:03:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-07-07 14:03:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-07-07 14:03:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-07-07 14:03:01,957 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-07-07 14:03:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:01,958 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-07-07 14:03:01,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-07 14:03:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-07-07 14:03:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-07-07 14:03:01,960 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:01,960 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:01,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-07 14:03:01,961 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:01,961 INFO L82 PathProgramCache]: Analyzing trace with hash -59944786, now seen corresponding path program 31 times [2020-07-07 14:03:01,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:01,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308388462] [2020-07-07 14:03:01,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:04,128 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:04,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308388462] [2020-07-07 14:03:04,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:04,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2020-07-07 14:03:04,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117314951] [2020-07-07 14:03:04,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-07 14:03:04,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-07 14:03:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 14:03:04,130 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 67 states. [2020-07-07 14:03:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:07,788 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2020-07-07 14:03:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-07-07 14:03:07,789 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 290 [2020-07-07 14:03:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:07,791 INFO L225 Difference]: With dead ends: 306 [2020-07-07 14:03:07,791 INFO L226 Difference]: Without dead ends: 304 [2020-07-07 14:03:07,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5126, Invalid=11644, Unknown=0, NotChecked=0, Total=16770 [2020-07-07 14:03:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-07-07 14:03:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-07-07 14:03:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-07 14:03:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-07-07 14:03:07,804 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-07-07 14:03:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:07,805 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-07-07 14:03:07,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-07 14:03:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-07-07 14:03:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-07-07 14:03:07,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:07,807 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:07,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-07-07 14:03:07,807 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:07,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1849039890, now seen corresponding path program 32 times [2020-07-07 14:03:07,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:07,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729665907] [2020-07-07 14:03:07,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:10,051 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:10,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729665907] [2020-07-07 14:03:10,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:10,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-07-07 14:03:10,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493402665] [2020-07-07 14:03:10,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-07 14:03:10,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:10,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-07 14:03:10,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2020-07-07 14:03:10,053 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 69 states. [2020-07-07 14:03:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:13,990 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2020-07-07 14:03:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-07-07 14:03:13,990 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 299 [2020-07-07 14:03:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:13,993 INFO L225 Difference]: With dead ends: 315 [2020-07-07 14:03:13,993 INFO L226 Difference]: Without dead ends: 313 [2020-07-07 14:03:13,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5451, Invalid=12371, Unknown=0, NotChecked=0, Total=17822 [2020-07-07 14:03:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-07-07 14:03:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-07-07 14:03:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-07-07 14:03:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-07-07 14:03:14,007 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-07-07 14:03:14,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:14,007 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-07-07 14:03:14,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-07 14:03:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-07-07 14:03:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-07-07 14:03:14,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:14,010 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:14,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-07-07 14:03:14,010 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:14,011 INFO L82 PathProgramCache]: Analyzing trace with hash 651288878, now seen corresponding path program 33 times [2020-07-07 14:03:14,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:14,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211768475] [2020-07-07 14:03:14,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:16,448 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:16,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211768475] [2020-07-07 14:03:16,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:16,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2020-07-07 14:03:16,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401881446] [2020-07-07 14:03:16,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-07 14:03:16,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-07 14:03:16,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2020-07-07 14:03:16,452 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 71 states. [2020-07-07 14:03:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:20,905 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-07-07 14:03:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-07-07 14:03:20,908 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 308 [2020-07-07 14:03:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:20,910 INFO L225 Difference]: With dead ends: 324 [2020-07-07 14:03:20,910 INFO L226 Difference]: Without dead ends: 322 [2020-07-07 14:03:20,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5786, Invalid=13120, Unknown=0, NotChecked=0, Total=18906 [2020-07-07 14:03:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-07 14:03:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-07-07 14:03:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-07-07 14:03:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-07-07 14:03:20,922 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-07-07 14:03:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:20,923 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-07-07 14:03:20,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-07 14:03:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-07-07 14:03:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-07-07 14:03:20,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:20,925 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:20,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-07-07 14:03:20,926 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:20,926 INFO L82 PathProgramCache]: Analyzing trace with hash 682367890, now seen corresponding path program 34 times [2020-07-07 14:03:20,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:20,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231374774] [2020-07-07 14:03:20,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:23,393 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:23,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231374774] [2020-07-07 14:03:23,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:23,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-07-07 14:03:23,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355192745] [2020-07-07 14:03:23,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-07 14:03:23,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-07 14:03:23,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2020-07-07 14:03:23,396 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 73 states. [2020-07-07 14:03:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:27,929 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-07-07 14:03:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-07-07 14:03:27,930 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 317 [2020-07-07 14:03:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:27,933 INFO L225 Difference]: With dead ends: 333 [2020-07-07 14:03:27,934 INFO L226 Difference]: Without dead ends: 331 [2020-07-07 14:03:27,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6131, Invalid=13891, Unknown=0, NotChecked=0, Total=20022 [2020-07-07 14:03:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-07-07 14:03:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-07-07 14:03:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-07-07 14:03:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-07-07 14:03:27,946 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-07-07 14:03:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:27,947 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-07-07 14:03:27,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-07 14:03:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-07-07 14:03:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-07 14:03:27,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:27,949 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:27,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-07-07 14:03:27,949 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:27,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1402777170, now seen corresponding path program 35 times [2020-07-07 14:03:27,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:27,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862339] [2020-07-07 14:03:27,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:30,686 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:30,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862339] [2020-07-07 14:03:30,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:30,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2020-07-07 14:03:30,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348960925] [2020-07-07 14:03:30,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-07 14:03:30,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:30,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-07 14:03:30,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2020-07-07 14:03:30,689 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2020-07-07 14:03:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:35,564 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2020-07-07 14:03:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-07-07 14:03:35,565 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 326 [2020-07-07 14:03:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:35,567 INFO L225 Difference]: With dead ends: 342 [2020-07-07 14:03:35,567 INFO L226 Difference]: Without dead ends: 340 [2020-07-07 14:03:35,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=6486, Invalid=14684, Unknown=0, NotChecked=0, Total=21170 [2020-07-07 14:03:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-07-07 14:03:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-07-07 14:03:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-07 14:03:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-07-07 14:03:35,582 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-07-07 14:03:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:35,582 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-07-07 14:03:35,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-07 14:03:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-07-07 14:03:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-07 14:03:35,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:35,585 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:35,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-07-07 14:03:35,585 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1670300910, now seen corresponding path program 36 times [2020-07-07 14:03:35,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:35,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344523679] [2020-07-07 14:03:35,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:38,489 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:38,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344523679] [2020-07-07 14:03:38,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:38,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-07-07 14:03:38,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690011125] [2020-07-07 14:03:38,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-07 14:03:38,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:38,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-07 14:03:38,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2020-07-07 14:03:38,492 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 77 states. [2020-07-07 14:03:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:43,364 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2020-07-07 14:03:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-07-07 14:03:43,364 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 335 [2020-07-07 14:03:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:43,367 INFO L225 Difference]: With dead ends: 351 [2020-07-07 14:03:43,367 INFO L226 Difference]: Without dead ends: 349 [2020-07-07 14:03:43,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=6851, Invalid=15499, Unknown=0, NotChecked=0, Total=22350 [2020-07-07 14:03:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-07-07 14:03:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-07-07 14:03:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-07-07 14:03:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-07-07 14:03:43,381 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-07-07 14:03:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:43,381 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-07-07 14:03:43,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-07 14:03:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-07-07 14:03:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-07 14:03:43,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:43,384 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:43,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-07-07 14:03:43,384 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:43,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1347837394, now seen corresponding path program 37 times [2020-07-07 14:03:43,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:43,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089592229] [2020-07-07 14:03:43,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:46,530 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:46,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089592229] [2020-07-07 14:03:46,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:46,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2020-07-07 14:03:46,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289431735] [2020-07-07 14:03:46,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-07 14:03:46,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:46,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-07 14:03:46,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2020-07-07 14:03:46,533 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 79 states. [2020-07-07 14:03:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:03:51,552 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2020-07-07 14:03:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-07-07 14:03:51,553 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 344 [2020-07-07 14:03:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:03:51,556 INFO L225 Difference]: With dead ends: 360 [2020-07-07 14:03:51,556 INFO L226 Difference]: Without dead ends: 358 [2020-07-07 14:03:51,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=7226, Invalid=16336, Unknown=0, NotChecked=0, Total=23562 [2020-07-07 14:03:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-07-07 14:03:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-07-07 14:03:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-07-07 14:03:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-07-07 14:03:51,569 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-07-07 14:03:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:03:51,570 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-07-07 14:03:51,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-07 14:03:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-07-07 14:03:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-07 14:03:51,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:03:51,573 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:03:51,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-07-07 14:03:51,573 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:03:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:03:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash -165230, now seen corresponding path program 38 times [2020-07-07 14:03:51,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:03:51,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872557405] [2020-07-07 14:03:51,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:03:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:03:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:03:54,898 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:03:54,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872557405] [2020-07-07 14:03:54,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:03:54,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2020-07-07 14:03:54,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747567381] [2020-07-07 14:03:54,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-07 14:03:54,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:03:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-07 14:03:54,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2020-07-07 14:03:54,900 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 81 states. [2020-07-07 14:04:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:00,391 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2020-07-07 14:04:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-07-07 14:04:00,392 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 353 [2020-07-07 14:04:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:00,394 INFO L225 Difference]: With dead ends: 369 [2020-07-07 14:04:00,394 INFO L226 Difference]: Without dead ends: 367 [2020-07-07 14:04:00,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4482 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=7611, Invalid=17195, Unknown=0, NotChecked=0, Total=24806 [2020-07-07 14:04:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-07-07 14:04:00,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-07-07 14:04:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-07-07 14:04:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-07-07 14:04:00,412 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-07-07 14:04:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:00,412 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-07-07 14:04:00,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-07 14:04:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-07-07 14:04:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-07-07 14:04:00,415 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:00,415 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:00,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-07-07 14:04:00,415 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1054027090, now seen corresponding path program 39 times [2020-07-07 14:04:00,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:00,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688036460] [2020-07-07 14:04:00,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:03,923 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:03,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688036460] [2020-07-07 14:04:03,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:03,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2020-07-07 14:04:03,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815945218] [2020-07-07 14:04:03,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-07 14:04:03,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:03,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-07 14:04:03,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2020-07-07 14:04:03,925 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 83 states. [2020-07-07 14:04:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:10,200 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-07-07 14:04:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-07-07 14:04:10,201 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2020-07-07 14:04:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:10,202 INFO L225 Difference]: With dead ends: 378 [2020-07-07 14:04:10,202 INFO L226 Difference]: Without dead ends: 376 [2020-07-07 14:04:10,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=8006, Invalid=18076, Unknown=0, NotChecked=0, Total=26082 [2020-07-07 14:04:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-07 14:04:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-07-07 14:04:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-07-07 14:04:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-07-07 14:04:10,216 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-07-07 14:04:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:10,217 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-07-07 14:04:10,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-07 14:04:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-07-07 14:04:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-07-07 14:04:10,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:10,220 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:10,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-07-07 14:04:10,220 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:10,220 INFO L82 PathProgramCache]: Analyzing trace with hash -607593966, now seen corresponding path program 40 times [2020-07-07 14:04:10,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:10,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301151796] [2020-07-07 14:04:10,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:14,022 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:14,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301151796] [2020-07-07 14:04:14,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:14,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2020-07-07 14:04:14,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312855783] [2020-07-07 14:04:14,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-07 14:04:14,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:14,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-07 14:04:14,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2020-07-07 14:04:14,025 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 85 states. [2020-07-07 14:04:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:20,762 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2020-07-07 14:04:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-07-07 14:04:20,763 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 371 [2020-07-07 14:04:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:20,766 INFO L225 Difference]: With dead ends: 387 [2020-07-07 14:04:20,766 INFO L226 Difference]: Without dead ends: 385 [2020-07-07 14:04:20,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=8411, Invalid=18979, Unknown=0, NotChecked=0, Total=27390 [2020-07-07 14:04:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-07-07 14:04:20,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-07-07 14:04:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-07-07 14:04:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-07-07 14:04:20,779 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-07-07 14:04:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:20,779 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-07-07 14:04:20,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-07 14:04:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-07-07 14:04:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-07-07 14:04:20,782 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:20,782 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:20,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-07-07 14:04:20,783 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1601495854, now seen corresponding path program 41 times [2020-07-07 14:04:20,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:20,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189000438] [2020-07-07 14:04:20,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:24,931 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:24,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189000438] [2020-07-07 14:04:24,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:24,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2020-07-07 14:04:24,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589310393] [2020-07-07 14:04:24,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-07 14:04:24,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-07 14:04:24,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2020-07-07 14:04:24,934 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 87 states. [2020-07-07 14:04:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:31,672 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2020-07-07 14:04:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-07-07 14:04:31,673 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 380 [2020-07-07 14:04:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:31,676 INFO L225 Difference]: With dead ends: 396 [2020-07-07 14:04:31,676 INFO L226 Difference]: Without dead ends: 394 [2020-07-07 14:04:31,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5205 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=8826, Invalid=19904, Unknown=0, NotChecked=0, Total=28730 [2020-07-07 14:04:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-07-07 14:04:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-07-07 14:04:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-07 14:04:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-07-07 14:04:31,690 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-07-07 14:04:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:31,690 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-07-07 14:04:31,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-07 14:04:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-07-07 14:04:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-07 14:04:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:31,693 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:31,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-07-07 14:04:31,694 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1974773358, now seen corresponding path program 42 times [2020-07-07 14:04:31,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:31,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428020556] [2020-07-07 14:04:31,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:36,053 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:36,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428020556] [2020-07-07 14:04:36,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:36,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2020-07-07 14:04:36,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386676108] [2020-07-07 14:04:36,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-07 14:04:36,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:36,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-07 14:04:36,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2020-07-07 14:04:36,055 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 89 states. [2020-07-07 14:04:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:43,563 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2020-07-07 14:04:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-07-07 14:04:43,563 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 389 [2020-07-07 14:04:43,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:43,567 INFO L225 Difference]: With dead ends: 405 [2020-07-07 14:04:43,567 INFO L226 Difference]: Without dead ends: 403 [2020-07-07 14:04:43,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=9251, Invalid=20851, Unknown=0, NotChecked=0, Total=30102 [2020-07-07 14:04:43,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-07-07 14:04:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-07-07 14:04:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-07-07 14:04:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-07-07 14:04:43,581 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-07-07 14:04:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:43,582 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-07-07 14:04:43,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-07 14:04:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-07-07 14:04:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-07 14:04:43,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:43,585 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:43,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-07-07 14:04:43,586 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:43,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1997132718, now seen corresponding path program 43 times [2020-07-07 14:04:43,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:43,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161956299] [2020-07-07 14:04:43,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:04:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:04:48,355 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:04:48,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161956299] [2020-07-07 14:04:48,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:04:48,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2020-07-07 14:04:48,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071924524] [2020-07-07 14:04:48,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-07 14:04:48,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:04:48,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-07 14:04:48,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2020-07-07 14:04:48,358 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 91 states. [2020-07-07 14:04:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:04:56,642 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2020-07-07 14:04:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-07-07 14:04:56,643 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 398 [2020-07-07 14:04:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:04:56,647 INFO L225 Difference]: With dead ends: 414 [2020-07-07 14:04:56,647 INFO L226 Difference]: Without dead ends: 412 [2020-07-07 14:04:56,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=9686, Invalid=21820, Unknown=0, NotChecked=0, Total=31506 [2020-07-07 14:04:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-07-07 14:04:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-07-07 14:04:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-07-07 14:04:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-07-07 14:04:56,661 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-07-07 14:04:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:04:56,661 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-07-07 14:04:56,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-07 14:04:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-07-07 14:04:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-07 14:04:56,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:04:56,665 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:04:56,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-07-07 14:04:56,665 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:04:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:04:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1208157934, now seen corresponding path program 44 times [2020-07-07 14:04:56,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:04:56,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924485122] [2020-07-07 14:04:56,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:04:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:01,773 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:01,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924485122] [2020-07-07 14:05:01,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:01,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2020-07-07 14:05:01,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811329801] [2020-07-07 14:05:01,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-07-07 14:05:01,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:01,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-07-07 14:05:01,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-07-07 14:05:01,775 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 93 states. [2020-07-07 14:05:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:10,051 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-07-07 14:05:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-07-07 14:05:10,052 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 407 [2020-07-07 14:05:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:10,055 INFO L225 Difference]: With dead ends: 423 [2020-07-07 14:05:10,055 INFO L226 Difference]: Without dead ends: 421 [2020-07-07 14:05:10,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=10131, Invalid=22811, Unknown=0, NotChecked=0, Total=32942 [2020-07-07 14:05:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-07-07 14:05:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-07-07 14:05:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-07-07 14:05:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-07-07 14:05:10,069 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-07-07 14:05:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:10,069 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-07-07 14:05:10,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-07-07 14:05:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-07-07 14:05:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-07-07 14:05:10,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:10,072 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:10,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-07-07 14:05:10,073 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:10,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash -495737810, now seen corresponding path program 45 times [2020-07-07 14:05:10,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:10,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962464732] [2020-07-07 14:05:10,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:15,547 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:15,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962464732] [2020-07-07 14:05:15,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:15,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2020-07-07 14:05:15,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147410827] [2020-07-07 14:05:15,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-07-07 14:05:15,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-07-07 14:05:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2020-07-07 14:05:15,550 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 95 states. [2020-07-07 14:05:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:24,880 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2020-07-07 14:05:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-07-07 14:05:24,881 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 416 [2020-07-07 14:05:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:24,884 INFO L225 Difference]: With dead ends: 432 [2020-07-07 14:05:24,884 INFO L226 Difference]: Without dead ends: 430 [2020-07-07 14:05:24,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=10586, Invalid=23824, Unknown=0, NotChecked=0, Total=34410 [2020-07-07 14:05:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-07-07 14:05:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-07-07 14:05:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-07-07 14:05:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-07-07 14:05:24,899 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-07-07 14:05:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:24,900 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-07-07 14:05:24,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-07-07 14:05:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-07-07 14:05:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-07-07 14:05:24,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:24,903 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:24,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-07-07 14:05:24,903 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:24,904 INFO L82 PathProgramCache]: Analyzing trace with hash -480921454, now seen corresponding path program 46 times [2020-07-07 14:05:24,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:24,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258208195] [2020-07-07 14:05:24,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:31,131 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:31,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258208195] [2020-07-07 14:05:31,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:31,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-07-07 14:05:31,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884671106] [2020-07-07 14:05:31,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-07-07 14:05:31,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:31,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-07-07 14:05:31,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2020-07-07 14:05:31,134 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 97 states. [2020-07-07 14:05:41,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:41,221 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-07-07 14:05:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-07-07 14:05:41,222 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 425 [2020-07-07 14:05:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:41,225 INFO L225 Difference]: With dead ends: 441 [2020-07-07 14:05:41,225 INFO L226 Difference]: Without dead ends: 439 [2020-07-07 14:05:41,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=11051, Invalid=24859, Unknown=0, NotChecked=0, Total=35910 [2020-07-07 14:05:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-07-07 14:05:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-07-07 14:05:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-07 14:05:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-07-07 14:05:41,237 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-07-07 14:05:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:41,238 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-07-07 14:05:41,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-07-07 14:05:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-07-07 14:05:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-07 14:05:41,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:41,241 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:41,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-07-07 14:05:41,241 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash -365275986, now seen corresponding path program 47 times [2020-07-07 14:05:41,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:41,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011330897] [2020-07-07 14:05:41,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:05:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:05:47,324 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:05:47,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011330897] [2020-07-07 14:05:47,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:05:47,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2020-07-07 14:05:47,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007615478] [2020-07-07 14:05:47,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-07-07 14:05:47,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:05:47,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-07-07 14:05:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2020-07-07 14:05:47,329 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 99 states. [2020-07-07 14:05:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:05:58,404 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2020-07-07 14:05:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-07-07 14:05:58,406 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 434 [2020-07-07 14:05:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:05:58,408 INFO L225 Difference]: With dead ends: 450 [2020-07-07 14:05:58,408 INFO L226 Difference]: Without dead ends: 448 [2020-07-07 14:05:58,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=11526, Invalid=25916, Unknown=0, NotChecked=0, Total=37442 [2020-07-07 14:05:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-07-07 14:05:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-07-07 14:05:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-07-07 14:05:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-07-07 14:05:58,423 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-07-07 14:05:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:05:58,424 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-07-07 14:05:58,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-07-07 14:05:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-07-07 14:05:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-07-07 14:05:58,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:05:58,427 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:05:58,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-07-07 14:05:58,428 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:05:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:05:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash -590505966, now seen corresponding path program 48 times [2020-07-07 14:05:58,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:05:58,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849768962] [2020-07-07 14:05:58,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:05:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:05,341 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:05,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849768962] [2020-07-07 14:06:05,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:05,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2020-07-07 14:06:05,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143637742] [2020-07-07 14:06:05,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-07 14:06:05,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:05,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-07 14:06:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2020-07-07 14:06:05,343 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 101 states. [2020-07-07 14:06:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:16,332 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-07-07 14:06:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-07-07 14:06:16,333 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 443 [2020-07-07 14:06:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:16,336 INFO L225 Difference]: With dead ends: 459 [2020-07-07 14:06:16,336 INFO L226 Difference]: Without dead ends: 457 [2020-07-07 14:06:16,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=12011, Invalid=26995, Unknown=0, NotChecked=0, Total=39006 [2020-07-07 14:06:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-07-07 14:06:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-07-07 14:06:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-07-07 14:06:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-07-07 14:06:16,347 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-07-07 14:06:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:16,348 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-07-07 14:06:16,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-07 14:06:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-07-07 14:06:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-07-07 14:06:16,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:16,350 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:16,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-07-07 14:06:16,350 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:16,350 INFO L82 PathProgramCache]: Analyzing trace with hash -991566546, now seen corresponding path program 49 times [2020-07-07 14:06:16,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:16,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501235780] [2020-07-07 14:06:16,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:23,223 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:23,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501235780] [2020-07-07 14:06:23,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:23,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2020-07-07 14:06:23,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252099079] [2020-07-07 14:06:23,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-07-07 14:06:23,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:23,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-07-07 14:06:23,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2020-07-07 14:06:23,226 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 103 states. [2020-07-07 14:06:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:35,818 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-07-07 14:06:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-07-07 14:06:35,820 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 452 [2020-07-07 14:06:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:35,822 INFO L225 Difference]: With dead ends: 468 [2020-07-07 14:06:35,822 INFO L226 Difference]: Without dead ends: 466 [2020-07-07 14:06:35,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7397 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=12506, Invalid=28096, Unknown=0, NotChecked=0, Total=40602 [2020-07-07 14:06:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-07-07 14:06:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-07-07 14:06:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-07-07 14:06:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-07-07 14:06:35,836 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-07-07 14:06:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:35,837 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-07-07 14:06:35,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-07-07 14:06:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-07-07 14:06:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-07 14:06:35,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:35,840 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:35,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-07-07 14:06:35,841 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1188861842, now seen corresponding path program 50 times [2020-07-07 14:06:35,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:35,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789446366] [2020-07-07 14:06:35,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:43,556 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:43,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789446366] [2020-07-07 14:06:43,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:43,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-07-07 14:06:43,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405347705] [2020-07-07 14:06:43,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-07-07 14:06:43,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-07-07 14:06:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2020-07-07 14:06:43,559 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 105 states. [2020-07-07 14:06:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:58,648 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2020-07-07 14:06:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-07-07 14:06:58,650 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 461 [2020-07-07 14:06:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:58,654 INFO L225 Difference]: With dead ends: 477 [2020-07-07 14:06:58,654 INFO L226 Difference]: Without dead ends: 475 [2020-07-07 14:06:58,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=13011, Invalid=29219, Unknown=0, NotChecked=0, Total=42230 [2020-07-07 14:06:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-07-07 14:06:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-07-07 14:06:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-07-07 14:06:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-07-07 14:06:58,668 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-07-07 14:06:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:58,668 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-07-07 14:06:58,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-07-07 14:06:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-07-07 14:06:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-07-07 14:06:58,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:58,672 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:58,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-07-07 14:06:58,673 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash 385766830, now seen corresponding path program 51 times [2020-07-07 14:06:58,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:58,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866094833] [2020-07-07 14:06:58,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:06,536 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:06,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866094833] [2020-07-07 14:07:06,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:06,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2020-07-07 14:07:06,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611838343] [2020-07-07 14:07:06,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-07-07 14:07:06,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:06,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-07-07 14:07:06,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2020-07-07 14:07:06,539 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 107 states. [2020-07-07 14:07:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:20,115 INFO L93 Difference]: Finished difference Result 486 states and 486 transitions. [2020-07-07 14:07:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-07-07 14:07:20,117 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 470 [2020-07-07 14:07:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:20,119 INFO L225 Difference]: With dead ends: 486 [2020-07-07 14:07:20,119 INFO L226 Difference]: Without dead ends: 484 [2020-07-07 14:07:20,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=13526, Invalid=30364, Unknown=0, NotChecked=0, Total=43890 [2020-07-07 14:07:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-07-07 14:07:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-07-07 14:07:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-07-07 14:07:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-07-07 14:07:20,133 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-07-07 14:07:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:20,134 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-07-07 14:07:20,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-07-07 14:07:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-07-07 14:07:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-07-07 14:07:20,137 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:20,137 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:20,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-07-07 14:07:20,138 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash 368752402, now seen corresponding path program 52 times [2020-07-07 14:07:20,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:20,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899034196] [2020-07-07 14:07:20,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:28,827 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:28,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899034196] [2020-07-07 14:07:28,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:28,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2020-07-07 14:07:28,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790797996] [2020-07-07 14:07:28,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-07-07 14:07:28,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:28,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-07-07 14:07:28,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2020-07-07 14:07:28,830 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 109 states. [2020-07-07 14:07:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:44,341 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2020-07-07 14:07:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-07-07 14:07:44,343 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 479 [2020-07-07 14:07:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:44,346 INFO L225 Difference]: With dead ends: 495 [2020-07-07 14:07:44,346 INFO L226 Difference]: Without dead ends: 493 [2020-07-07 14:07:44,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=14051, Invalid=31531, Unknown=0, NotChecked=0, Total=45582 [2020-07-07 14:07:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-07-07 14:07:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-07-07 14:07:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-07-07 14:07:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-07-07 14:07:44,357 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-07-07 14:07:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:44,358 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-07-07 14:07:44,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-07-07 14:07:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-07-07 14:07:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-07-07 14:07:44,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:44,361 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:44,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-07-07 14:07:44,361 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1930143278, now seen corresponding path program 53 times [2020-07-07 14:07:44,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:44,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251688894] [2020-07-07 14:07:44,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:53,360 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:53,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251688894] [2020-07-07 14:07:53,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:53,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2020-07-07 14:07:53,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593207462] [2020-07-07 14:07:53,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-07-07 14:07:53,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:53,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-07-07 14:07:53,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2020-07-07 14:07:53,362 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 111 states. [2020-07-07 14:08:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:09,864 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2020-07-07 14:08:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-07-07 14:08:09,866 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 488 [2020-07-07 14:08:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:09,869 INFO L225 Difference]: With dead ends: 504 [2020-07-07 14:08:09,869 INFO L226 Difference]: Without dead ends: 502 [2020-07-07 14:08:09,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8637 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=14586, Invalid=32720, Unknown=0, NotChecked=0, Total=47306 [2020-07-07 14:08:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-07-07 14:08:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-07-07 14:08:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-07-07 14:08:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-07-07 14:08:09,885 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-07-07 14:08:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:09,886 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-07-07 14:08:09,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-07-07 14:08:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-07-07 14:08:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-07-07 14:08:09,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:09,890 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:09,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-07-07 14:08:09,890 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:09,891 INFO L82 PathProgramCache]: Analyzing trace with hash 278918802, now seen corresponding path program 54 times [2020-07-07 14:08:09,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:09,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032909805] [2020-07-07 14:08:09,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:19,778 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:19,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032909805] [2020-07-07 14:08:19,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:19,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2020-07-07 14:08:19,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977394890] [2020-07-07 14:08:19,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-07-07 14:08:19,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:19,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-07-07 14:08:19,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2020-07-07 14:08:19,781 INFO L87 Difference]: Start difference. First operand 500 states and 500 transitions. Second operand 113 states. [2020-07-07 14:08:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:37,794 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-07-07 14:08:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-07-07 14:08:37,796 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 497 [2020-07-07 14:08:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:37,799 INFO L225 Difference]: With dead ends: 513 [2020-07-07 14:08:37,799 INFO L226 Difference]: Without dead ends: 511 [2020-07-07 14:08:37,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=15131, Invalid=33931, Unknown=0, NotChecked=0, Total=49062 [2020-07-07 14:08:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-07-07 14:08:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-07-07 14:08:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-07-07 14:08:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2020-07-07 14:08:37,814 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 497 [2020-07-07 14:08:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:37,814 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2020-07-07 14:08:37,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-07-07 14:08:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2020-07-07 14:08:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-07-07 14:08:37,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:37,818 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:37,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-07-07 14:08:37,818 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash -644491602, now seen corresponding path program 55 times [2020-07-07 14:08:37,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:37,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521933990] [2020-07-07 14:08:37,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:48,582 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:48,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521933990] [2020-07-07 14:08:48,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:48,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2020-07-07 14:08:48,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769931562] [2020-07-07 14:08:48,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-07-07 14:08:48,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:48,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-07-07 14:08:48,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2020-07-07 14:08:48,585 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 115 states. [2020-07-07 14:09:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:10,357 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2020-07-07 14:09:10,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-07-07 14:09:10,359 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 506 [2020-07-07 14:09:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:10,362 INFO L225 Difference]: With dead ends: 522 [2020-07-07 14:09:10,362 INFO L226 Difference]: Without dead ends: 520 [2020-07-07 14:09:10,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=15686, Invalid=35164, Unknown=0, NotChecked=0, Total=50850 [2020-07-07 14:09:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-07-07 14:09:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2020-07-07 14:09:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-07-07 14:09:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-07-07 14:09:10,376 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 506 [2020-07-07 14:09:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:10,376 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-07-07 14:09:10,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-07-07 14:09:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-07-07 14:09:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-07-07 14:09:10,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:10,380 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:09:10,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-07-07 14:09:10,381 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1329878546, now seen corresponding path program 56 times [2020-07-07 14:09:10,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:10,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570991503] [2020-07-07 14:09:10,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:09:23,180 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:23,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570991503] [2020-07-07 14:09:23,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:23,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2020-07-07 14:09:23,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120453459] [2020-07-07 14:09:23,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-07-07 14:09:23,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:23,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-07-07 14:09:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2020-07-07 14:09:23,183 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 117 states. [2020-07-07 14:09:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:09:45,226 INFO L93 Difference]: Finished difference Result 531 states and 531 transitions. [2020-07-07 14:09:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-07-07 14:09:45,229 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 515 [2020-07-07 14:09:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:09:45,231 INFO L225 Difference]: With dead ends: 531 [2020-07-07 14:09:45,231 INFO L226 Difference]: Without dead ends: 529 [2020-07-07 14:09:45,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=16251, Invalid=36419, Unknown=0, NotChecked=0, Total=52670 [2020-07-07 14:09:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-07-07 14:09:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2020-07-07 14:09:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-07-07 14:09:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2020-07-07 14:09:45,243 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 515 [2020-07-07 14:09:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:09:45,243 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2020-07-07 14:09:45,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-07-07 14:09:45,244 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2020-07-07 14:09:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-07 14:09:45,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:09:45,246 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:09:45,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-07-07 14:09:45,247 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:09:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:09:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash 958719790, now seen corresponding path program 57 times [2020-07-07 14:09:45,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:09:45,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602469840] [2020-07-07 14:09:45,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:09:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:09:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:09:58,377 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:09:58,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602469840] [2020-07-07 14:09:58,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:09:58,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2020-07-07 14:09:58,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072590868] [2020-07-07 14:09:58,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-07-07 14:09:58,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:09:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-07-07 14:09:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2020-07-07 14:09:58,381 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 119 states. [2020-07-07 14:10:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:10:21,789 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2020-07-07 14:10:21,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2020-07-07 14:10:21,792 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 524 [2020-07-07 14:10:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:10:21,795 INFO L225 Difference]: With dead ends: 540 [2020-07-07 14:10:21,795 INFO L226 Difference]: Without dead ends: 538 [2020-07-07 14:10:21,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9973 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=16826, Invalid=37696, Unknown=0, NotChecked=0, Total=54522 [2020-07-07 14:10:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-07-07 14:10:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2020-07-07 14:10:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-07-07 14:10:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 536 transitions. [2020-07-07 14:10:21,806 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 536 transitions. Word has length 524 [2020-07-07 14:10:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:10:21,807 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 536 transitions. [2020-07-07 14:10:21,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-07-07 14:10:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 536 transitions. [2020-07-07 14:10:21,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-07-07 14:10:21,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:10:21,810 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:10:21,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-07-07 14:10:21,810 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:10:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:10:21,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1134570094, now seen corresponding path program 58 times [2020-07-07 14:10:21,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:10:21,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86137860] [2020-07-07 14:10:21,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:10:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:10:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:10:36,274 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:10:36,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86137860] [2020-07-07 14:10:36,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:10:36,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2020-07-07 14:10:36,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098059809] [2020-07-07 14:10:36,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-07-07 14:10:36,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:10:36,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-07-07 14:10:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2020-07-07 14:10:36,277 INFO L87 Difference]: Start difference. First operand 536 states and 536 transitions. Second operand 121 states. [2020-07-07 14:11:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:11:00,437 INFO L93 Difference]: Finished difference Result 549 states and 549 transitions. [2020-07-07 14:11:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2020-07-07 14:11:00,440 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 533 [2020-07-07 14:11:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:11:00,443 INFO L225 Difference]: With dead ends: 549 [2020-07-07 14:11:00,443 INFO L226 Difference]: Without dead ends: 547 [2020-07-07 14:11:00,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10322 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=17411, Invalid=38995, Unknown=0, NotChecked=0, Total=56406 [2020-07-07 14:11:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-07-07 14:11:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2020-07-07 14:11:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-07-07 14:11:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 545 transitions. [2020-07-07 14:11:00,459 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 545 transitions. Word has length 533 [2020-07-07 14:11:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:11:00,459 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 545 transitions. [2020-07-07 14:11:00,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 121 states. [2020-07-07 14:11:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 545 transitions. [2020-07-07 14:11:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-07-07 14:11:00,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:11:00,462 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:11:00,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-07-07 14:11:00,462 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:11:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:11:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -297740370, now seen corresponding path program 59 times [2020-07-07 14:11:00,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:11:00,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614114073] [2020-07-07 14:11:00,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:11:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:11:15,835 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:11:15,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614114073] [2020-07-07 14:11:15,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:11:15,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2020-07-07 14:11:15,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797294331] [2020-07-07 14:11:15,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2020-07-07 14:11:15,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:11:15,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2020-07-07 14:11:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3724, Invalid=11282, Unknown=0, NotChecked=0, Total=15006 [2020-07-07 14:11:15,838 INFO L87 Difference]: Start difference. First operand 545 states and 545 transitions. Second operand 123 states. [2020-07-07 14:11:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:11:41,639 INFO L93 Difference]: Finished difference Result 558 states and 558 transitions. [2020-07-07 14:11:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2020-07-07 14:11:41,642 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 542 [2020-07-07 14:11:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:11:41,645 INFO L225 Difference]: With dead ends: 558 [2020-07-07 14:11:41,645 INFO L226 Difference]: Without dead ends: 556 [2020-07-07 14:11:41,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10677 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=18006, Invalid=40316, Unknown=0, NotChecked=0, Total=58322 [2020-07-07 14:11:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-07-07 14:11:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2020-07-07 14:11:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-07-07 14:11:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2020-07-07 14:11:41,658 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 542 [2020-07-07 14:11:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:11:41,659 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2020-07-07 14:11:41,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 123 states. [2020-07-07 14:11:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2020-07-07 14:11:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-07-07 14:11:41,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:11:41,662 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:11:41,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-07-07 14:11:41,662 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:11:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:11:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1804962542, now seen corresponding path program 60 times [2020-07-07 14:11:41,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:11:41,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697712499] [2020-07-07 14:11:41,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:11:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:11:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:11:59,242 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:11:59,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697712499] [2020-07-07 14:11:59,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:11:59,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2020-07-07 14:11:59,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239675930] [2020-07-07 14:11:59,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2020-07-07 14:11:59,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:11:59,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2020-07-07 14:11:59,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3847, Invalid=11653, Unknown=0, NotChecked=0, Total=15500 [2020-07-07 14:11:59,244 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand 125 states. [2020-07-07 14:12:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:12:26,798 INFO L93 Difference]: Finished difference Result 567 states and 567 transitions. [2020-07-07 14:12:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2020-07-07 14:12:26,801 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 551 [2020-07-07 14:12:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:12:26,805 INFO L225 Difference]: With dead ends: 567 [2020-07-07 14:12:26,805 INFO L226 Difference]: Without dead ends: 565 [2020-07-07 14:12:26,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11038 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=18611, Invalid=41659, Unknown=0, NotChecked=0, Total=60270 [2020-07-07 14:12:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-07-07 14:12:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2020-07-07 14:12:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-07-07 14:12:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 563 transitions. [2020-07-07 14:12:26,821 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 563 transitions. Word has length 551 [2020-07-07 14:12:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:12:26,822 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 563 transitions. [2020-07-07 14:12:26,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 125 states. [2020-07-07 14:12:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 563 transitions. [2020-07-07 14:12:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-07-07 14:12:26,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:12:26,825 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:12:26,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-07-07 14:12:26,825 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:12:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:12:26,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1131522094, now seen corresponding path program 61 times [2020-07-07 14:12:26,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:12:26,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457833058] [2020-07-07 14:12:26,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:12:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:12:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:12:44,600 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:12:44,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457833058] [2020-07-07 14:12:44,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:12:44,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2020-07-07 14:12:44,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412114331] [2020-07-07 14:12:44,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2020-07-07 14:12:44,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:12:44,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2020-07-07 14:12:44,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3972, Invalid=12030, Unknown=0, NotChecked=0, Total=16002 [2020-07-07 14:12:44,603 INFO L87 Difference]: Start difference. First operand 563 states and 563 transitions. Second operand 127 states. [2020-07-07 14:13:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:13:15,424 INFO L93 Difference]: Finished difference Result 576 states and 576 transitions. [2020-07-07 14:13:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2020-07-07 14:13:15,427 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 560 [2020-07-07 14:13:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:13:15,431 INFO L225 Difference]: With dead ends: 576 [2020-07-07 14:13:15,431 INFO L226 Difference]: Without dead ends: 574 [2020-07-07 14:13:15,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11405 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=19226, Invalid=43024, Unknown=0, NotChecked=0, Total=62250 [2020-07-07 14:13:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-07-07 14:13:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-07-07 14:13:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-07-07 14:13:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 572 transitions. [2020-07-07 14:13:15,448 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 572 transitions. Word has length 560 [2020-07-07 14:13:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:13:15,449 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 572 transitions. [2020-07-07 14:13:15,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 127 states. [2020-07-07 14:13:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 572 transitions. [2020-07-07 14:13:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-07-07 14:13:15,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:13:15,453 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:13:15,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-07-07 14:13:15,453 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:13:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:13:15,454 INFO L82 PathProgramCache]: Analyzing trace with hash -438553454, now seen corresponding path program 62 times [2020-07-07 14:13:15,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:13:15,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764767552] [2020-07-07 14:13:15,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:13:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:13:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:13:34,190 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:13:34,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764767552] [2020-07-07 14:13:34,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:13:34,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2020-07-07 14:13:34,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287628810] [2020-07-07 14:13:34,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2020-07-07 14:13:34,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:13:34,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2020-07-07 14:13:34,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=12413, Unknown=0, NotChecked=0, Total=16512 [2020-07-07 14:13:34,193 INFO L87 Difference]: Start difference. First operand 572 states and 572 transitions. Second operand 129 states. [2020-07-07 14:14:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:14:07,487 INFO L93 Difference]: Finished difference Result 585 states and 585 transitions. [2020-07-07 14:14:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2020-07-07 14:14:07,491 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 569 [2020-07-07 14:14:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:14:07,494 INFO L225 Difference]: With dead ends: 585 [2020-07-07 14:14:07,494 INFO L226 Difference]: Without dead ends: 583 [2020-07-07 14:14:07,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11778 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=19851, Invalid=44411, Unknown=0, NotChecked=0, Total=64262 [2020-07-07 14:14:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-07-07 14:14:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-07-07 14:14:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-07-07 14:14:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 581 transitions. [2020-07-07 14:14:07,506 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 581 transitions. Word has length 569 [2020-07-07 14:14:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:14:07,507 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 581 transitions. [2020-07-07 14:14:07,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 129 states. [2020-07-07 14:14:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 581 transitions. [2020-07-07 14:14:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-07-07 14:14:07,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:14:07,510 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:14:07,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-07-07 14:14:07,510 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:14:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:14:07,510 INFO L82 PathProgramCache]: Analyzing trace with hash -247506770, now seen corresponding path program 63 times [2020-07-07 14:14:07,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:14:07,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761063647] [2020-07-07 14:14:07,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:14:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:14:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:14:27,739 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:14:27,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761063647] [2020-07-07 14:14:27,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:14:27,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2020-07-07 14:14:27,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524616353] [2020-07-07 14:14:27,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2020-07-07 14:14:27,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:14:27,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2020-07-07 14:14:27,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4228, Invalid=12802, Unknown=0, NotChecked=0, Total=17030 [2020-07-07 14:14:27,744 INFO L87 Difference]: Start difference. First operand 581 states and 581 transitions. Second operand 131 states.