/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 --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=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 0.1.25-177f698 [2020-08-22 04:01:14,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:01:14,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:01:14,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 04:01:14,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:01:14,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:01:14,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:01:14,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:01:14,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:01:14,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:01:14,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:01:14,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:01:14,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:01:14,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:01:14,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:01:14,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:01:14,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 04:01:14,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:01:14,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:01:14,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:01:14,193 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 [2020-08-22 04:01:14,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:01:14,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:01:14,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:01:14,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:01:14,217 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:01:14,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:01:14,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:01:14,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:01:14,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:01:14,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:01:14,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:01:14,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:01:14,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:01:14,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:01:14,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:01:14,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:01:14,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:01:14,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:01:14,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:01:14,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:01:14,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:01:14,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:01:14,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:01:14,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:01:14,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:01:14,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:01:14,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:01:14,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:01:14,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:01:14,223 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 04:01:14,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:01:14,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:01:14,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:01:14,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:01:14,550 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:01:14,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 04:01:14,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bea3ba744/b813e2be6cfc4ca1b35b57aaa63ad48e/FLAG43cfda698 [2020-08-22 04:01:15,163 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:01:15,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 04:01:15,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bea3ba744/b813e2be6cfc4ca1b35b57aaa63ad48e/FLAG43cfda698 [2020-08-22 04:01:15,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bea3ba744/b813e2be6cfc4ca1b35b57aaa63ad48e [2020-08-22 04:01:15,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:01:15,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:01:15,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:01:15,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:01:15,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:01:15,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:01:15" (1/1) ... [2020-08-22 04:01:15,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b821aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:15, skipping insertion in model container [2020-08-22 04:01:15,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:01:15" (1/1) ... [2020-08-22 04:01:15,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:01:15,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:01:16,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:01:16,154 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:01:16,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:01:16,706 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:01:16,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16 WrapperNode [2020-08-22 04:01:16,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:01:16,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:01:16,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:01:16,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:01:16,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (1/1) ... [2020-08-22 04:01:16,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:01:16,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:01:16,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:01:16,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:01:16,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (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 [2020-08-22 04:01:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:01:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:01:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:01:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:01:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:01:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 04:01:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 04:01:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 04:01:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:01:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:01:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 04:01:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 04:01:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 04:01:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 04:01:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 04:01:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 04:01:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 04:01:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:01:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:01:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:01:18,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:01:18,545 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 04:01:18,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:01:18 BoogieIcfgContainer [2020-08-22 04:01:18,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:01:18,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:01:18,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:01:18,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:01:18,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:01:15" (1/3) ... [2020-08-22 04:01:18,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a9f341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:01:18, skipping insertion in model container [2020-08-22 04:01:18,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:01:16" (2/3) ... [2020-08-22 04:01:18,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a9f341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:01:18, skipping insertion in model container [2020-08-22 04:01:18,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:01:18" (3/3) ... [2020-08-22 04:01:18,565 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 04:01:18,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:01:18,584 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-22 04:01:18,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-22 04:01:18,631 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:01:18,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:01:18,631 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:01:18,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:01:18,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:01:18,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:01:18,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:01:18,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:01:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-22 04:01:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:01:18,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:18,680 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] [2020-08-22 04:01:18,681 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:18,688 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-22 04:01:18,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:18,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256438447] [2020-08-22 04:01:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:19,650 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:19,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256438447] [2020-08-22 04:01:19,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:19,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:19,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278556396] [2020-08-22 04:01:19,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:19,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:19,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:19,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:19,796 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-22 04:01:20,133 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 04:01:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:22,734 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-22 04:01:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:22,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 04:01:22,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:22,759 INFO L225 Difference]: With dead ends: 754 [2020-08-22 04:01:22,760 INFO L226 Difference]: Without dead ends: 593 [2020-08-22 04:01:22,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-22 04:01:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-22 04:01:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-22 04:01:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-22 04:01:22,865 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-22 04:01:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:22,866 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-22 04:01:22,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-22 04:01:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:01:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:22,872 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] [2020-08-22 04:01:22,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:01:22,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:22,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:22,873 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-22 04:01:22,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:22,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170479240] [2020-08-22 04:01:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:23,271 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:23,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:23,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170479240] [2020-08-22 04:01:23,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:23,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:23,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144552232] [2020-08-22 04:01:23,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:23,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:23,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:23,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:23,320 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-22 04:01:23,577 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 04:01:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:25,637 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-22 04:01:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:25,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 04:01:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:25,649 INFO L225 Difference]: With dead ends: 1190 [2020-08-22 04:01:25,649 INFO L226 Difference]: Without dead ends: 961 [2020-08-22 04:01:25,652 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 [2020-08-22 04:01:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-22 04:01:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-22 04:01:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-22 04:01:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-22 04:01:25,703 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-22 04:01:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:25,704 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-22 04:01:25,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-22 04:01:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:01:25,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:25,708 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] [2020-08-22 04:01:25,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:01:25,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:25,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-22 04:01:25,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:25,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858413484] [2020-08-22 04:01:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:26,068 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:26,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858413484] [2020-08-22 04:01:26,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:26,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:26,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818121646] [2020-08-22 04:01:26,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:26,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:26,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:26,138 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-22 04:01:26,412 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 04:01:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:28,814 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-22 04:01:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:28,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 04:01:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:28,831 INFO L225 Difference]: With dead ends: 2090 [2020-08-22 04:01:28,831 INFO L226 Difference]: Without dead ends: 1701 [2020-08-22 04:01:28,836 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 [2020-08-22 04:01:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-22 04:01:28,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-22 04:01:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-22 04:01:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-22 04:01:28,992 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-22 04:01:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:28,993 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-22 04:01:28,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-22 04:01:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:01:29,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:29,000 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] [2020-08-22 04:01:29,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:01:29,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-22 04:01:29,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:29,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818140997] [2020-08-22 04:01:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:29,624 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:29,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818140997] [2020-08-22 04:01:29,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:29,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:29,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304489129] [2020-08-22 04:01:29,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:29,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:29,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:29,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:29,686 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-22 04:01:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:32,887 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-22 04:01:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:32,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 04:01:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:32,907 INFO L225 Difference]: With dead ends: 4967 [2020-08-22 04:01:32,907 INFO L226 Difference]: Without dead ends: 3281 [2020-08-22 04:01:32,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:01:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-22 04:01:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-22 04:01:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-22 04:01:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-22 04:01:33,037 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-22 04:01:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:33,037 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-22 04:01:33,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-22 04:01:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 04:01:33,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:33,043 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] [2020-08-22 04:01:33,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:01:33,043 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-22 04:01:33,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:33,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640238916] [2020-08-22 04:01:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:33,423 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:33,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640238916] [2020-08-22 04:01:33,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:33,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:33,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999332398] [2020-08-22 04:01:33,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:33,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:33,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:33,479 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-22 04:01:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:36,208 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-22 04:01:36,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:01:36,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-22 04:01:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:36,238 INFO L225 Difference]: With dead ends: 9659 [2020-08-22 04:01:36,239 INFO L226 Difference]: Without dead ends: 6456 [2020-08-22 04:01:36,246 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 [2020-08-22 04:01:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-22 04:01:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-22 04:01:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-22 04:01:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-22 04:01:36,420 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-22 04:01:36,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:36,420 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-22 04:01:36,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-22 04:01:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 04:01:36,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:36,426 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] [2020-08-22 04:01:36,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:01:36,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-22 04:01:36,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:36,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74223888] [2020-08-22 04:01:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:36,847 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:36,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:36,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74223888] [2020-08-22 04:01:36,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:36,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:36,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140190348] [2020-08-22 04:01:36,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:36,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:36,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:36,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:36,932 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-22 04:01:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:40,017 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-22 04:01:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:40,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-22 04:01:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:40,044 INFO L225 Difference]: With dead ends: 9441 [2020-08-22 04:01:40,045 INFO L226 Difference]: Without dead ends: 6238 [2020-08-22 04:01:40,053 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 [2020-08-22 04:01:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-22 04:01:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-22 04:01:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-22 04:01:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-22 04:01:40,434 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-22 04:01:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:40,434 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-22 04:01:40,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-22 04:01:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 04:01:40,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:40,447 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] [2020-08-22 04:01:40,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:01:40,448 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:40,448 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-22 04:01:40,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:40,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513852589] [2020-08-22 04:01:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:40,758 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:40,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513852589] [2020-08-22 04:01:40,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:40,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:40,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671547720] [2020-08-22 04:01:40,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:40,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:40,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:40,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:40,797 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-22 04:01:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:44,241 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-22 04:01:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:01:44,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-22 04:01:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:44,294 INFO L225 Difference]: With dead ends: 18492 [2020-08-22 04:01:44,294 INFO L226 Difference]: Without dead ends: 12348 [2020-08-22 04:01:44,307 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 [2020-08-22 04:01:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-22 04:01:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-22 04:01:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-22 04:01:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-22 04:01:44,596 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-22 04:01:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:44,596 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-22 04:01:44,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-22 04:01:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:01:44,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:44,605 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] [2020-08-22 04:01:44,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:01:44,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-22 04:01:44,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:44,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966305299] [2020-08-22 04:01:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:44,926 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:45,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966305299] [2020-08-22 04:01:45,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:45,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:45,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534056752] [2020-08-22 04:01:45,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:45,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:45,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:45,047 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-22 04:01:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:48,571 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-22 04:01:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:01:48,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-22 04:01:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:48,594 INFO L225 Difference]: With dead ends: 16495 [2020-08-22 04:01:48,594 INFO L226 Difference]: Without dead ends: 10615 [2020-08-22 04:01:48,606 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 [2020-08-22 04:01:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-22 04:01:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-22 04:01:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 04:01:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-22 04:01:49,068 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-22 04:01:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:49,069 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-22 04:01:49,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-22 04:01:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:01:49,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:49,084 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] [2020-08-22 04:01:49,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:01:49,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-22 04:01:49,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:49,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430914204] [2020-08-22 04:01:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:49,401 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:49,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:49,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430914204] [2020-08-22 04:01:49,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:49,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:49,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928682820] [2020-08-22 04:01:49,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:49,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:49,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:49,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:49,439 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-22 04:01:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:51,847 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-22 04:01:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:51,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 04:01:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:51,875 INFO L225 Difference]: With dead ends: 21564 [2020-08-22 04:01:51,875 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 04:01:51,895 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 [2020-08-22 04:01:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 04:01:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-22 04:01:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-22 04:01:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-22 04:01:52,469 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-22 04:01:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:52,470 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-22 04:01:52,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-22 04:01:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:01:52,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:52,484 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] [2020-08-22 04:01:52,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:01:52,484 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-22 04:01:52,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:52,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866410544] [2020-08-22 04:01:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:52,918 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:52,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:52,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866410544] [2020-08-22 04:01:52,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:52,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:52,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298610810] [2020-08-22 04:01:52,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:52,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:52,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:52,994 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-22 04:01:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:56,496 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-22 04:01:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:56,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 04:01:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:56,516 INFO L225 Difference]: With dead ends: 15230 [2020-08-22 04:01:56,517 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 04:01:56,525 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 [2020-08-22 04:01:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 04:01:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-22 04:01:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 04:01:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-22 04:01:57,045 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-22 04:01:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:57,045 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-22 04:01:57,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-22 04:01:57,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 04:01:57,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:57,058 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] [2020-08-22 04:01:57,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:01:57,059 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:57,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-22 04:01:57,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:57,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29084538] [2020-08-22 04:01:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:57,340 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:01:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:57,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29084538] [2020-08-22 04:01:57,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:57,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:57,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697095985] [2020-08-22 04:01:57,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:57,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:57,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:57,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:57,377 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-22 04:02:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:02:01,229 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-22 04:02:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:02:01,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-22 04:02:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:02:01,840 INFO L225 Difference]: With dead ends: 25409 [2020-08-22 04:02:01,840 INFO L226 Difference]: Without dead ends: 21030 [2020-08-22 04:02:01,852 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 [2020-08-22 04:02:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-22 04:02:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-22 04:02:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-22 04:02:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-22 04:02:02,319 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-22 04:02:02,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:02:02,320 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-22 04:02:02,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:02:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-22 04:02:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 04:02:02,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:02:02,332 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] [2020-08-22 04:02:02,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:02:02,332 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:02:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:02:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-22 04:02:02,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:02:02,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329512234] [2020-08-22 04:02:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:02:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:02:02,690 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:02:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:02:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:02:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:02:02,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329512234] [2020-08-22 04:02:02,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:02:02,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:02:02,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741651940] [2020-08-22 04:02:02,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:02:02,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:02:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:02:02,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:02:02,733 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-22 04:02:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:02:05,989 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-22 04:02:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:02:05,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 04:02:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:02:06,012 INFO L225 Difference]: With dead ends: 30843 [2020-08-22 04:02:06,012 INFO L226 Difference]: Without dead ends: 20313 [2020-08-22 04:02:06,033 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 [2020-08-22 04:02:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-22 04:02:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-22 04:02:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-22 04:02:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-22 04:02:06,879 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-22 04:02:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:02:06,879 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-22 04:02:06,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:02:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-22 04:02:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 04:02:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:02:06,895 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] [2020-08-22 04:02:06,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:02:06,895 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:02:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:02:06,895 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-22 04:02:06,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:02:06,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659019376] [2020-08-22 04:02:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:02:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:02:07,267 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:02:07,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:02:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:02:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:02:07,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659019376] [2020-08-22 04:02:07,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:02:07,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:02:07,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917608898] [2020-08-22 04:02:07,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:02:07,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:02:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:02:07,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:02:07,322 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-22 04:02:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:02:11,577 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-22 04:02:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:02:11,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 04:02:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:02:11,614 INFO L225 Difference]: With dead ends: 54646 [2020-08-22 04:02:11,614 INFO L226 Difference]: Without dead ends: 34484 [2020-08-22 04:02:11,647 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 [2020-08-22 04:02:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states.