/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:30:31,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:30:31,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:30:31,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:30:31,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:30:31,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:30:31,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:30:31,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:30:31,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:30:31,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:30:31,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:30:31,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:30:31,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:30:31,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:30:31,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:30:31,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:30:31,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:30:31,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:30:31,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:30:31,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:30:31,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:30:31,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:30:31,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:30:31,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:30:31,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 11:30:31,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:30:31,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:30:31,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:30:31,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:30:31,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:30:31,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:30:31,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:30:31,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:30:31,869 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:30:31,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:30:31,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:30:31,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:30:31,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:30:31,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:30:31,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:30:31,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:30:31,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:30:31,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:30:31,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:30:31,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:30:31,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:30:31,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:30:31,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:30:31,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:30:31,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:30:31,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:30:31,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:30:31,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:30:31,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:30:31,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:30:31,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:30:31,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:30:31,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:30:31,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 11:30:32,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:30:32,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:30:32,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:30:32,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:30:32,204 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:30:32,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 11:30:32,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed68ac6c/014c665858d644ca96660a0146356178/FLAG1d7af77b9 [2020-08-18 11:30:32,867 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:30:32,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 11:30:32,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed68ac6c/014c665858d644ca96660a0146356178/FLAG1d7af77b9 [2020-08-18 11:30:33,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aed68ac6c/014c665858d644ca96660a0146356178 [2020-08-18 11:30:33,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:30:33,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:30:33,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:30:33,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:30:33,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:30:33,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:30:33" (1/1) ... [2020-08-18 11:30:33,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3c5dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:33, skipping insertion in model container [2020-08-18 11:30:33,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:30:33" (1/1) ... [2020-08-18 11:30:33,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:30:33,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:30:33,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:30:33,866 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:30:34,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:30:34,410 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:30:34,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34 WrapperNode [2020-08-18 11:30:34,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:30:34,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:30:34,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:30:34,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:30:34,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... [2020-08-18 11:30:34,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:30:34,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:30:34,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:30:34,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:30:34,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 11:30:34,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:30:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:30:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:30:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:30:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:30:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 11:30:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 11:30:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 11:30:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:30:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:30:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 11:30:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 11:30:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 11:30:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 11:30:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 11:30:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 11:30:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 11:30:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:30:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:30:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:30:36,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:30:36,260 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 11:30:36,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:30:36 BoogieIcfgContainer [2020-08-18 11:30:36,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:30:36,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:30:36,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:30:36,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:30:36,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:30:33" (1/3) ... [2020-08-18 11:30:36,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f29a7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:30:36, skipping insertion in model container [2020-08-18 11:30:36,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:30:34" (2/3) ... [2020-08-18 11:30:36,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f29a7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:30:36, skipping insertion in model container [2020-08-18 11:30:36,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:30:36" (3/3) ... [2020-08-18 11:30:36,277 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 11:30:36,317 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:30:36,328 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 11:30:36,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 11:30:36,372 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:30:36,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:30:36,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:30:36,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:30:36,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:30:36,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:30:36,373 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:30:36,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:30:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-18 11:30:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 11:30:36,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:36,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:36,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:36,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-18 11:30:36,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:36,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025361618] [2020-08-18 11:30:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:37,366 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:37,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025361618] [2020-08-18 11:30:37,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:37,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:30:37,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922318794] [2020-08-18 11:30:37,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:30:37,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:37,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:30:37,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:30:37,484 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-18 11:30:37,825 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 11:30:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:40,424 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-18 11:30:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:30:40,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 11:30:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:40,463 INFO L225 Difference]: With dead ends: 754 [2020-08-18 11:30:40,464 INFO L226 Difference]: Without dead ends: 593 [2020-08-18 11:30:40,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:30:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-18 11:30:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-18 11:30:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-18 11:30:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-18 11:30:40,584 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-18 11:30:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:40,585 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-18 11:30:40,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:30:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-18 11:30:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 11:30:40,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:40,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:40,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:30:40,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:40,592 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-18 11:30:40,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:40,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184232224] [2020-08-18 11:30:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:41,036 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:41,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:41,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184232224] [2020-08-18 11:30:41,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:41,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:30:41,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709052499] [2020-08-18 11:30:41,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:30:41,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:41,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:30:41,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:30:41,093 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-18 11:30:41,381 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 11:30:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:43,763 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-18 11:30:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:30:43,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 11:30:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:43,771 INFO L225 Difference]: With dead ends: 1190 [2020-08-18 11:30:43,772 INFO L226 Difference]: Without dead ends: 961 [2020-08-18 11:30:43,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:30:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-18 11:30:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-18 11:30:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-18 11:30:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-18 11:30:43,820 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-18 11:30:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:43,821 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-18 11:30:43,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:30:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-18 11:30:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 11:30:43,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:43,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:43,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:30:43,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:43,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-18 11:30:43,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:43,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069112254] [2020-08-18 11:30:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:44,302 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:44,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069112254] [2020-08-18 11:30:44,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:44,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:30:44,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987119168] [2020-08-18 11:30:44,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:30:44,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:44,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:30:44,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:30:44,369 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-18 11:30:44,638 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 11:30:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:46,843 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-18 11:30:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:30:46,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 11:30:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:46,856 INFO L225 Difference]: With dead ends: 2090 [2020-08-18 11:30:46,857 INFO L226 Difference]: Without dead ends: 1701 [2020-08-18 11:30:46,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:30:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-18 11:30:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-18 11:30:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-18 11:30:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-18 11:30:46,970 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-18 11:30:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:46,972 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-18 11:30:46,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:30:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-18 11:30:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 11:30:47,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:47,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:47,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:30:47,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-18 11:30:47,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:47,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118560007] [2020-08-18 11:30:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:47,571 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:47,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118560007] [2020-08-18 11:30:47,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:47,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:30:47,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073102330] [2020-08-18 11:30:47,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:30:47,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:47,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:30:47,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:30:47,628 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-18 11:30:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:50,976 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-18 11:30:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:30:50,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-18 11:30:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:50,995 INFO L225 Difference]: With dead ends: 4967 [2020-08-18 11:30:50,995 INFO L226 Difference]: Without dead ends: 3281 [2020-08-18 11:30:51,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:30:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-18 11:30:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-18 11:30:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-18 11:30:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-18 11:30:51,193 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-18 11:30:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:51,194 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-18 11:30:51,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:30:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-18 11:30:51,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 11:30:51,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:51,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:51,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:30:51,206 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:51,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:51,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-18 11:30:51,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:51,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561200955] [2020-08-18 11:30:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:51,502 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:51,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561200955] [2020-08-18 11:30:51,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:51,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:30:51,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60874492] [2020-08-18 11:30:51,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:30:51,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:30:51,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:30:51,538 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-18 11:30:54,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:54,334 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-18 11:30:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:30:54,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-18 11:30:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:54,363 INFO L225 Difference]: With dead ends: 9659 [2020-08-18 11:30:54,364 INFO L226 Difference]: Without dead ends: 6456 [2020-08-18 11:30:54,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:30:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-18 11:30:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-18 11:30:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-18 11:30:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-18 11:30:54,564 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-18 11:30:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:54,564 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-18 11:30:54,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:30:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-18 11:30:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 11:30:54,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:54,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:54,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:30:54,571 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-18 11:30:54,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:54,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363975930] [2020-08-18 11:30:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:55,050 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:55,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:55,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363975930] [2020-08-18 11:30:55,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:55,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:30:55,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210111766] [2020-08-18 11:30:55,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:30:55,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:55,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:30:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:30:55,124 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-18 11:30:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:30:58,373 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-18 11:30:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:30:58,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-18 11:30:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:30:58,401 INFO L225 Difference]: With dead ends: 9441 [2020-08-18 11:30:58,401 INFO L226 Difference]: Without dead ends: 6238 [2020-08-18 11:30:58,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:30:58,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-18 11:30:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-18 11:30:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-18 11:30:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-18 11:30:58,642 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-18 11:30:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:30:58,642 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-18 11:30:58,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:30:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-18 11:30:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 11:30:58,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:30:58,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:30:58,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:30:58,655 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:30:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:30:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-18 11:30:58,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:30:58,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635889631] [2020-08-18 11:30:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:30:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:58,989 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:30:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:30:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:30:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:30:59,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635889631] [2020-08-18 11:30:59,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:30:59,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:30:59,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975555391] [2020-08-18 11:30:59,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:30:59,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:30:59,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:30:59,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:30:59,028 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-18 11:31:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:02,454 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-18 11:31:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:31:02,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-18 11:31:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:02,496 INFO L225 Difference]: With dead ends: 18492 [2020-08-18 11:31:02,497 INFO L226 Difference]: Without dead ends: 12348 [2020-08-18 11:31:02,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:31:02,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-18 11:31:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-18 11:31:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-18 11:31:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-18 11:31:02,782 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-18 11:31:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:31:02,783 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-18 11:31:02,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:31:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-18 11:31:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 11:31:02,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:31:02,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:31:02,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:31:02,792 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:31:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:31:02,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-18 11:31:02,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:31:02,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383096238] [2020-08-18 11:31:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:31:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:03,101 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:31:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:31:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:31:03,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383096238] [2020-08-18 11:31:03,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:31:03,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:31:03,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781711524] [2020-08-18 11:31:03,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:31:03,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:31:03,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:31:03,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:31:03,147 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-18 11:31:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:06,424 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-18 11:31:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:31:06,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-18 11:31:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:06,447 INFO L225 Difference]: With dead ends: 16495 [2020-08-18 11:31:06,447 INFO L226 Difference]: Without dead ends: 10615 [2020-08-18 11:31:06,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:31:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-18 11:31:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-18 11:31:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-18 11:31:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-18 11:31:06,900 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-18 11:31:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:31:06,900 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-18 11:31:06,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:31:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-18 11:31:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 11:31:06,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:31:06,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:31:06,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:31:06,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:31:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:31:06,916 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-18 11:31:06,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:31:06,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409480061] [2020-08-18 11:31:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:31:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:07,248 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:31:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:31:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:31:07,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409480061] [2020-08-18 11:31:07,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:31:07,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:31:07,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830749137] [2020-08-18 11:31:07,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:31:07,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:31:07,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:31:07,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:31:07,317 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-18 11:31:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:09,667 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-18 11:31:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:31:09,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 11:31:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:09,689 INFO L225 Difference]: With dead ends: 21564 [2020-08-18 11:31:09,689 INFO L226 Difference]: Without dead ends: 10851 [2020-08-18 11:31:09,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:31:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-18 11:31:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-18 11:31:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-18 11:31:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-18 11:31:10,150 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-18 11:31:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:31:10,150 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-18 11:31:10,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:31:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-18 11:31:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 11:31:10,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:31:10,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:31:10,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:31:10,166 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:31:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:31:10,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-18 11:31:10,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:31:10,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076589474] [2020-08-18 11:31:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:31:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:10,507 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:31:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:31:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:31:10,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076589474] [2020-08-18 11:31:10,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:31:10,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:31:10,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397290229] [2020-08-18 11:31:10,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:31:10,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:31:10,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:31:10,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:31:10,654 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-18 11:31:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:13,954 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-18 11:31:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:31:13,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 11:31:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:13,969 INFO L225 Difference]: With dead ends: 15230 [2020-08-18 11:31:13,969 INFO L226 Difference]: Without dead ends: 10851 [2020-08-18 11:31:13,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:31:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-18 11:31:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-18 11:31:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-18 11:31:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-18 11:31:14,419 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-18 11:31:14,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:31:14,419 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-18 11:31:14,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:31:14,420 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-18 11:31:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 11:31:14,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:31:14,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:31:14,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:31:14,433 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:31:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:31:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-18 11:31:14,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:31:14,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456098719] [2020-08-18 11:31:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:31:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:14,715 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:31:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:31:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:31:14,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456098719] [2020-08-18 11:31:14,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:31:14,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:31:14,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349770549] [2020-08-18 11:31:14,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:31:14,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:31:14,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:31:14,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:31:14,749 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-18 11:31:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:18,433 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-18 11:31:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:31:18,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-18 11:31:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:18,459 INFO L225 Difference]: With dead ends: 25409 [2020-08-18 11:31:18,459 INFO L226 Difference]: Without dead ends: 21030 [2020-08-18 11:31:18,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:31:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-18 11:31:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-18 11:31:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-18 11:31:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-18 11:31:19,078 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-18 11:31:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:31:19,079 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-18 11:31:19,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:31:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-18 11:31:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 11:31:19,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:31:19,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:31:19,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:31:19,089 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:31:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:31:19,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-18 11:31:19,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:31:19,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242863976] [2020-08-18 11:31:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:31:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:19,479 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:31:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:31:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:31:19,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242863976] [2020-08-18 11:31:19,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:31:19,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:31:19,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884435386] [2020-08-18 11:31:19,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:31:19,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:31:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:31:19,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:31:19,526 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-18 11:31:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:22,732 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-18 11:31:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:31:22,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 11:31:22,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:22,758 INFO L225 Difference]: With dead ends: 30843 [2020-08-18 11:31:22,758 INFO L226 Difference]: Without dead ends: 20313 [2020-08-18 11:31:22,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:31:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-18 11:31:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-18 11:31:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-18 11:31:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-18 11:31:23,683 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-18 11:31:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:31:23,683 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-18 11:31:23,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:31:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-18 11:31:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 11:31:23,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:31:23,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:31:23,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 11:31:23,697 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:31:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:31:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-18 11:31:23,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:31:23,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889274216] [2020-08-18 11:31:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:31:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:24,042 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 11:31:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:31:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:31:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:31:24,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889274216] [2020-08-18 11:31:24,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:31:24,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:31:24,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810752447] [2020-08-18 11:31:24,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:31:24,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:31:24,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:31:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:31:24,094 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-18 11:31:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:31:28,417 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-18 11:31:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:31:28,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 11:31:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:31:28,447 INFO L225 Difference]: With dead ends: 54646 [2020-08-18 11:31:28,447 INFO L226 Difference]: Without dead ends: 34484 [2020-08-18 11:31:28,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:31:28,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states.