/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:11:55,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:11:55,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:11:55,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:11:55,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:11:55,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:11:55,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:11:55,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:11:55,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:11:55,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:11:55,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:11:55,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:11:55,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:11:55,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:11:55,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:11:55,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:11:55,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:11:55,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:11:55,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:11:55,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:11:55,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:11:55,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:11:55,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:11:55,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:11:55,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:11:55,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:11:55,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:11:55,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:11:55,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:11:55,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:11:55,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:11:55,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:11:55,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:11:55,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:11:55,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:11:55,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:11:55,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:11:55,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:11:55,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:11:55,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:11:55,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:11:55,524 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 [2020-10-12 19:11:55,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:11:55,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:11:55,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:11:55,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:11:55,566 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:11:55,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:11:55,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:11:55,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:11:55,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:11:55,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:11:55,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:11:55,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:11:55,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:11:55,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:11:55,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:11:55,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:11:55,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:11:55,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:11:55,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:11:55,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:11:55,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:11:55,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:11:55,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:11:55,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:11:55,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:11:55,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:11:55,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:11:55,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:11:55,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:11:55,572 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:11:55,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:11:55,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:11:55,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:11:55,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:11:55,920 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:11:55,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:11:55,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69703cff5/956fc87d4f7d4c9cae02d59e237e50ef/FLAG8ea4f6682 [2020-10-12 19:11:56,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:11:56,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:11:56,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69703cff5/956fc87d4f7d4c9cae02d59e237e50ef/FLAG8ea4f6682 [2020-10-12 19:11:56,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69703cff5/956fc87d4f7d4c9cae02d59e237e50ef [2020-10-12 19:11:56,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:11:56,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:11:56,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:11:56,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:11:56,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:11:56,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:11:56" (1/1) ... [2020-10-12 19:11:56,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afd2ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:56, skipping insertion in model container [2020-10-12 19:11:56,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:11:56" (1/1) ... [2020-10-12 19:11:56,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:11:56,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:11:57,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:11:57,489 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:11:57,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:11:57,962 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:11:57,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57 WrapperNode [2020-10-12 19:11:57,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:11:57,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:11:57,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:11:57,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:11:57,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:57,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:57,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:57,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:58,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:58,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:58,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (1/1) ... [2020-10-12 19:11:58,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:11:58,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:11:58,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:11:58,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:11:58,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (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 [2020-10-12 19:11:58,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:11:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:11:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:11:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:11:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:11:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:11:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:11:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:11:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:11:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:11:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:11:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:11:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:11:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:11:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:11:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:11:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:11:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:11:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:11:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:11:59,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:11:59,743 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:11:59,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:11:59 BoogieIcfgContainer [2020-10-12 19:11:59,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:11:59,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:11:59,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:11:59,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:11:59,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:11:56" (1/3) ... [2020-10-12 19:11:59,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a912a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:11:59, skipping insertion in model container [2020-10-12 19:11:59,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:57" (2/3) ... [2020-10-12 19:11:59,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a912a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:11:59, skipping insertion in model container [2020-10-12 19:11:59,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:11:59" (3/3) ... [2020-10-12 19:11:59,760 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:11:59,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:11:59,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 19:11:59,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 19:11:59,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:11:59,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:11:59,817 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:11:59,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:11:59,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:11:59,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:11:59,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:11:59,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:11:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states. [2020-10-12 19:11:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 19:11:59,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:59,866 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] [2020-10-12 19:11:59,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1668875299, now seen corresponding path program 1 times [2020-10-12 19:11:59,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:59,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930034889] [2020-10-12 19:11:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:01,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:05,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:05,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 19:12:05,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:12:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:12:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:12:05,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:12:05,885 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:05,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:12:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:05,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930034889] [2020-10-12 19:12:05,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:05,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:05,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550233872] [2020-10-12 19:12:05,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:05,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:05,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:05,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:05,988 INFO L87 Difference]: Start difference. First operand 371 states. Second operand 5 states. [2020-10-12 19:12:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:09,560 INFO L93 Difference]: Finished difference Result 1077 states and 1943 transitions. [2020-10-12 19:12:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:12:09,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-12 19:12:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:09,593 INFO L225 Difference]: With dead ends: 1077 [2020-10-12 19:12:09,593 INFO L226 Difference]: Without dead ends: 709 [2020-10-12 19:12:09,603 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 [2020-10-12 19:12:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-12 19:12:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 687. [2020-10-12 19:12:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-10-12 19:12:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 978 transitions. [2020-10-12 19:12:09,721 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 978 transitions. Word has length 140 [2020-10-12 19:12:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:09,722 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 978 transitions. [2020-10-12 19:12:09,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 978 transitions. [2020-10-12 19:12:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-12 19:12:09,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:09,729 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] [2020-10-12 19:12:09,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:12:09,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:09,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1882441798, now seen corresponding path program 1 times [2020-10-12 19:12:09,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:09,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331213753] [2020-10-12 19:12:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:09,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:14,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:14,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 19:12:14,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:12:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:12:14,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 19:12:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 19:12:15,057 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:15,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:15,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:15,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:15,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:12:15,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:15,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:15,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:15,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331213753] [2020-10-12 19:12:15,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:15,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:15,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464373436] [2020-10-12 19:12:15,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:15,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:15,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:15,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:15,137 INFO L87 Difference]: Start difference. First operand 687 states and 978 transitions. Second operand 5 states. [2020-10-12 19:12:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:17,886 INFO L93 Difference]: Finished difference Result 1977 states and 2801 transitions. [2020-10-12 19:12:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:17,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-12 19:12:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:17,898 INFO L225 Difference]: With dead ends: 1977 [2020-10-12 19:12:17,899 INFO L226 Difference]: Without dead ends: 1315 [2020-10-12 19:12:17,912 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 [2020-10-12 19:12:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-12 19:12:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1295. [2020-10-12 19:12:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-10-12 19:12:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1825 transitions. [2020-10-12 19:12:18,000 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1825 transitions. Word has length 141 [2020-10-12 19:12:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:18,000 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1825 transitions. [2020-10-12 19:12:18,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1825 transitions. [2020-10-12 19:12:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 19:12:18,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:18,007 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] [2020-10-12 19:12:18,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:12:18,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1327096511, now seen corresponding path program 1 times [2020-10-12 19:12:18,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:18,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352752119] [2020-10-12 19:12:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:23,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 19:12:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:12:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 19:12:23,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 19:12:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:23,457 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:23,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:23,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:23,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 19:12:23,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:12:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:23,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352752119] [2020-10-12 19:12:23,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:23,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:23,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819559397] [2020-10-12 19:12:23,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:23,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:23,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:23,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:23,595 INFO L87 Difference]: Start difference. First operand 1295 states and 1825 transitions. Second operand 5 states. [2020-10-12 19:12:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:26,683 INFO L93 Difference]: Finished difference Result 3719 states and 5208 transitions. [2020-10-12 19:12:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:26,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-12 19:12:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:26,695 INFO L225 Difference]: With dead ends: 3719 [2020-10-12 19:12:26,696 INFO L226 Difference]: Without dead ends: 2482 [2020-10-12 19:12:26,699 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 [2020-10-12 19:12:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-10-12 19:12:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2449. [2020-10-12 19:12:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-10-12 19:12:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3404 transitions. [2020-10-12 19:12:26,814 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3404 transitions. Word has length 142 [2020-10-12 19:12:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:26,814 INFO L479 AbstractCegarLoop]: Abstraction has 2449 states and 3404 transitions. [2020-10-12 19:12:26,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3404 transitions. [2020-10-12 19:12:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 19:12:26,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:26,820 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] [2020-10-12 19:12:26,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:12:26,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:26,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1000917860, now seen corresponding path program 1 times [2020-10-12 19:12:26,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:26,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086862398] [2020-10-12 19:12:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 19:12:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:12:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:12:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:12:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:12:32,260 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:32,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:32,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:32,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:12:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:32,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086862398] [2020-10-12 19:12:32,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:32,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:32,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521689252] [2020-10-12 19:12:32,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:32,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:32,321 INFO L87 Difference]: Start difference. First operand 2449 states and 3404 transitions. Second operand 5 states. [2020-10-12 19:12:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:35,204 INFO L93 Difference]: Finished difference Result 7125 states and 9886 transitions. [2020-10-12 19:12:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:35,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-12 19:12:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:35,229 INFO L225 Difference]: With dead ends: 7125 [2020-10-12 19:12:35,230 INFO L226 Difference]: Without dead ends: 4769 [2020-10-12 19:12:35,237 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 [2020-10-12 19:12:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2020-10-12 19:12:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4736. [2020-10-12 19:12:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4736 states. [2020-10-12 19:12:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 6515 transitions. [2020-10-12 19:12:35,438 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 6515 transitions. Word has length 143 [2020-10-12 19:12:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:35,440 INFO L479 AbstractCegarLoop]: Abstraction has 4736 states and 6515 transitions. [2020-10-12 19:12:35,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 6515 transitions. [2020-10-12 19:12:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 19:12:35,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:35,450 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] [2020-10-12 19:12:35,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:12:35,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:35,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:35,451 INFO L82 PathProgramCache]: Analyzing trace with hash 184905344, now seen corresponding path program 1 times [2020-10-12 19:12:35,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:35,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354391744] [2020-10-12 19:12:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:38,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:40,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:40,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 19:12:40,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:12:40,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:12:40,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:12:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:40,764 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:40,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:40,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:12:40,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:40,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354391744] [2020-10-12 19:12:40,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:40,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:40,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51502763] [2020-10-12 19:12:40,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:40,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:40,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:40,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:40,828 INFO L87 Difference]: Start difference. First operand 4736 states and 6515 transitions. Second operand 5 states. [2020-10-12 19:12:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:43,620 INFO L93 Difference]: Finished difference Result 13620 states and 18706 transitions. [2020-10-12 19:12:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:43,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-12 19:12:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:43,660 INFO L225 Difference]: With dead ends: 13620 [2020-10-12 19:12:43,660 INFO L226 Difference]: Without dead ends: 9176 [2020-10-12 19:12:43,671 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 [2020-10-12 19:12:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2020-10-12 19:12:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 9143. [2020-10-12 19:12:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9143 states. [2020-10-12 19:12:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9143 states to 9143 states and 12421 transitions. [2020-10-12 19:12:44,037 INFO L78 Accepts]: Start accepts. Automaton has 9143 states and 12421 transitions. Word has length 144 [2020-10-12 19:12:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:44,037 INFO L479 AbstractCegarLoop]: Abstraction has 9143 states and 12421 transitions. [2020-10-12 19:12:44,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9143 states and 12421 transitions. [2020-10-12 19:12:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:12:44,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:44,054 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] [2020-10-12 19:12:44,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:12:44,055 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:44,055 INFO L82 PathProgramCache]: Analyzing trace with hash 101559676, now seen corresponding path program 1 times [2020-10-12 19:12:44,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:44,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435780911] [2020-10-12 19:12:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:44,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:49,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:12:49,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:12:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:12:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:12:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:49,413 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:49,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:49,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:49,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:12:49,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:49,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435780911] [2020-10-12 19:12:49,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:49,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:49,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301801907] [2020-10-12 19:12:49,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:49,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:49,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:49,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:49,489 INFO L87 Difference]: Start difference. First operand 9143 states and 12421 transitions. Second operand 5 states. [2020-10-12 19:12:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:52,963 INFO L93 Difference]: Finished difference Result 24762 states and 33817 transitions. [2020-10-12 19:12:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:12:52,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 19:12:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:53,023 INFO L225 Difference]: With dead ends: 24762 [2020-10-12 19:12:53,023 INFO L226 Difference]: Without dead ends: 17641 [2020-10-12 19:12:53,043 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 [2020-10-12 19:12:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17641 states. [2020-10-12 19:12:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17641 to 17608. [2020-10-12 19:12:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17608 states. [2020-10-12 19:12:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17608 states to 17608 states and 23603 transitions. [2020-10-12 19:12:53,882 INFO L78 Accepts]: Start accepts. Automaton has 17608 states and 23603 transitions. Word has length 145 [2020-10-12 19:12:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:53,883 INFO L479 AbstractCegarLoop]: Abstraction has 17608 states and 23603 transitions. [2020-10-12 19:12:53,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:12:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 17608 states and 23603 transitions. [2020-10-12 19:12:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:12:53,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:53,913 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] [2020-10-12 19:12:53,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:12:53,913 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2068458080, now seen corresponding path program 1 times [2020-10-12 19:12:53,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:53,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253040451] [2020-10-12 19:12:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:58,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:12:58,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:12:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:12:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:12:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 19:12:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:12:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:59,341 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:12:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:59,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:59,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:59,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:12:59,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:59,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253040451] [2020-10-12 19:12:59,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:59,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:12:59,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388032618] [2020-10-12 19:12:59,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:12:59,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:59,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:12:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:12:59,397 INFO L87 Difference]: Start difference. First operand 17608 states and 23603 transitions. Second operand 5 states. [2020-10-12 19:13:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:01,119 INFO L93 Difference]: Finished difference Result 26973 states and 36426 transitions. [2020-10-12 19:13:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:01,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 19:13:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:01,145 INFO L225 Difference]: With dead ends: 26973 [2020-10-12 19:13:01,145 INFO L226 Difference]: Without dead ends: 11452 [2020-10-12 19:13:01,175 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 [2020-10-12 19:13:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2020-10-12 19:13:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 11420. [2020-10-12 19:13:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11420 states. [2020-10-12 19:13:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 15247 transitions. [2020-10-12 19:13:01,742 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 15247 transitions. Word has length 146 [2020-10-12 19:13:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:01,742 INFO L479 AbstractCegarLoop]: Abstraction has 11420 states and 15247 transitions. [2020-10-12 19:13:01,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 15247 transitions. [2020-10-12 19:13:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 19:13:01,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:01,758 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, 1] [2020-10-12 19:13:01,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:13:01,759 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash -652830547, now seen corresponding path program 1 times [2020-10-12 19:13:01,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:01,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474838069] [2020-10-12 19:13:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:06,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 19:13:06,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:13:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:13:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:13:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:13:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 19:13:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:07,072 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:13:07,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:07,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:13:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:13:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:13:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:07,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474838069] [2020-10-12 19:13:07,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:07,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:07,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50726211] [2020-10-12 19:13:07,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:13:07,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:13:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:07,125 INFO L87 Difference]: Start difference. First operand 11420 states and 15247 transitions. Second operand 6 states. [2020-10-12 19:13:07,392 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-12 19:13:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:09,608 INFO L93 Difference]: Finished difference Result 25796 states and 35123 transitions. [2020-10-12 19:13:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:13:09,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-12 19:13:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:09,642 INFO L225 Difference]: With dead ends: 25796 [2020-10-12 19:13:09,643 INFO L226 Difference]: Without dead ends: 16855 [2020-10-12 19:13:09,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:13:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16855 states. [2020-10-12 19:13:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16855 to 16836. [2020-10-12 19:13:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16836 states. [2020-10-12 19:13:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16836 states to 16836 states and 22633 transitions. [2020-10-12 19:13:10,482 INFO L78 Accepts]: Start accepts. Automaton has 16836 states and 22633 transitions. Word has length 153 [2020-10-12 19:13:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:10,482 INFO L479 AbstractCegarLoop]: Abstraction has 16836 states and 22633 transitions. [2020-10-12 19:13:10,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:13:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 16836 states and 22633 transitions. [2020-10-12 19:13:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 19:13:10,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:10,498 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, 1] [2020-10-12 19:13:10,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:13:10,498 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:10,499 INFO L82 PathProgramCache]: Analyzing trace with hash 849878435, now seen corresponding path program 1 times [2020-10-12 19:13:10,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:10,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640096729] [2020-10-12 19:13:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:10,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:15,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:15,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5211 [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 19:13:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:16,014 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:13:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:16,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:16,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:16,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:13:16,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:16,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640096729] [2020-10-12 19:13:16,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:16,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:16,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842542800] [2020-10-12 19:13:16,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:16,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:16,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:16,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:16,068 INFO L87 Difference]: Start difference. First operand 16836 states and 22633 transitions. Second operand 5 states. [2020-10-12 19:13:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:18,020 INFO L93 Difference]: Finished difference Result 30443 states and 40977 transitions. [2020-10-12 19:13:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:13:18,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 19:13:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:18,048 INFO L225 Difference]: With dead ends: 30443 [2020-10-12 19:13:18,048 INFO L226 Difference]: Without dead ends: 13906 [2020-10-12 19:13:18,078 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 [2020-10-12 19:13:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2020-10-12 19:13:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 13906. [2020-10-12 19:13:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13906 states. [2020-10-12 19:13:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13906 states to 13906 states and 18679 transitions. [2020-10-12 19:13:18,739 INFO L78 Accepts]: Start accepts. Automaton has 13906 states and 18679 transitions. Word has length 153 [2020-10-12 19:13:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:18,739 INFO L479 AbstractCegarLoop]: Abstraction has 13906 states and 18679 transitions. [2020-10-12 19:13:18,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13906 states and 18679 transitions. [2020-10-12 19:13:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 19:13:18,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:18,749 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, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:18,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:13:18,750 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1043105116, now seen corresponding path program 1 times [2020-10-12 19:13:18,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:18,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960161016] [2020-10-12 19:13:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:23,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 19:13:23,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:13:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:13:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:13:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:13:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:13:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:24,085 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:13:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:24,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:24,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:24,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:13:24,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:24,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960161016] [2020-10-12 19:13:24,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:24,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:13:24,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925840009] [2020-10-12 19:13:24,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:13:24,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:24,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:13:24,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:13:24,129 INFO L87 Difference]: Start difference. First operand 13906 states and 18679 transitions. Second operand 5 states. [2020-10-12 19:13:24,390 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:13:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:27,798 INFO L93 Difference]: Finished difference Result 20424 states and 27456 transitions. [2020-10-12 19:13:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:13:27,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 19:13:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:27,816 INFO L225 Difference]: With dead ends: 20424 [2020-10-12 19:13:27,816 INFO L226 Difference]: Without dead ends: 13943 [2020-10-12 19:13:27,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:13:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13943 states. [2020-10-12 19:13:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13943 to 13906. [2020-10-12 19:13:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13906 states. [2020-10-12 19:13:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13906 states to 13906 states and 18585 transitions. [2020-10-12 19:13:28,460 INFO L78 Accepts]: Start accepts. Automaton has 13906 states and 18585 transitions. Word has length 158 [2020-10-12 19:13:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:28,460 INFO L479 AbstractCegarLoop]: Abstraction has 13906 states and 18585 transitions. [2020-10-12 19:13:28,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:13:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13906 states and 18585 transitions. [2020-10-12 19:13:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:13:28,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:28,471 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:28,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:13:28,471 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:28,472 INFO L82 PathProgramCache]: Analyzing trace with hash 575174423, now seen corresponding path program 1 times [2020-10-12 19:13:28,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:28,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060630025] [2020-10-12 19:13:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:33,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:33,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:13:33,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:13:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:13:33,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:13:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:13:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 19:13:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:33,993 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:13:33,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:34,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:34,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:34,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:13:34,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:13:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:34,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:13:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:34,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060630025] [2020-10-12 19:13:34,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:34,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:13:34,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666385401] [2020-10-12 19:13:34,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:13:34,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:34,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:13:34,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:13:34,061 INFO L87 Difference]: Start difference. First operand 13906 states and 18585 transitions. Second operand 15 states. [2020-10-12 19:13:34,420 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 19:13:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:13:44,572 INFO L93 Difference]: Finished difference Result 82117 states and 118012 transitions. [2020-10-12 19:13:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 19:13:44,573 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 159 [2020-10-12 19:13:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:13:44,650 INFO L225 Difference]: With dead ends: 82117 [2020-10-12 19:13:44,650 INFO L226 Difference]: Without dead ends: 69552 [2020-10-12 19:13:44,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=514, Invalid=2036, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:13:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69552 states. [2020-10-12 19:13:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69552 to 33634. [2020-10-12 19:13:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33634 states. [2020-10-12 19:13:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33634 states to 33634 states and 45959 transitions. [2020-10-12 19:13:47,024 INFO L78 Accepts]: Start accepts. Automaton has 33634 states and 45959 transitions. Word has length 159 [2020-10-12 19:13:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:13:47,025 INFO L479 AbstractCegarLoop]: Abstraction has 33634 states and 45959 transitions. [2020-10-12 19:13:47,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:13:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 33634 states and 45959 transitions. [2020-10-12 19:13:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:13:47,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:13:47,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:13:47,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:13:47,043 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:13:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:13:47,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1691880320, now seen corresponding path program 1 times [2020-10-12 19:13:47,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:13:47,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886124379] [2020-10-12 19:13:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:13:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:47,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:13:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:52,765 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:13:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:13:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:13:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:13:52,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:13:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:13:52,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:13:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:13:52,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886124379] [2020-10-12 19:13:52,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:13:52,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:13:52,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183969209] [2020-10-12 19:13:52,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:13:52,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:13:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:13:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:13:52,819 INFO L87 Difference]: Start difference. First operand 33634 states and 45959 transitions. Second operand 12 states. [2020-10-12 19:13:53,516 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 217 [2020-10-12 19:13:57,245 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-12 19:14:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:39,348 INFO L93 Difference]: Finished difference Result 119203 states and 172072 transitions. [2020-10-12 19:14:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:14:39,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2020-10-12 19:14:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:39,466 INFO L225 Difference]: With dead ends: 119203 [2020-10-12 19:14:39,466 INFO L226 Difference]: Without dead ends: 103943 [2020-10-12 19:14:39,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=197, Invalid=787, Unknown=8, NotChecked=0, Total=992 [2020-10-12 19:14:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103943 states. [2020-10-12 19:14:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103943 to 39343. [2020-10-12 19:14:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39343 states. [2020-10-12 19:14:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39343 states to 39343 states and 52723 transitions. [2020-10-12 19:14:44,242 INFO L78 Accepts]: Start accepts. Automaton has 39343 states and 52723 transitions. Word has length 159 [2020-10-12 19:14:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:44,242 INFO L479 AbstractCegarLoop]: Abstraction has 39343 states and 52723 transitions. [2020-10-12 19:14:44,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:14:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 39343 states and 52723 transitions. [2020-10-12 19:14:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:14:44,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:44,260 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:14:44,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:14:44,260 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:44,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2091361136, now seen corresponding path program 1 times [2020-10-12 19:14:44,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:44,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786943613] [2020-10-12 19:14:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:48,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4662 [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:14:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 19:14:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:49,244 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:14:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:49,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:49,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:49,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:14:49,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:49,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786943613] [2020-10-12 19:14:49,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:49,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:49,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709255247] [2020-10-12 19:14:49,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:49,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:49,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:49,280 INFO L87 Difference]: Start difference. First operand 39343 states and 52723 transitions. Second operand 5 states. [2020-10-12 19:14:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:53,221 INFO L93 Difference]: Finished difference Result 67994 states and 91163 transitions. [2020-10-12 19:14:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:53,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 19:14:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:53,248 INFO L225 Difference]: With dead ends: 67994 [2020-10-12 19:14:53,248 INFO L226 Difference]: Without dead ends: 28977 [2020-10-12 19:14:53,273 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 [2020-10-12 19:14:53,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28977 states. [2020-10-12 19:14:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28977 to 28976. [2020-10-12 19:14:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28976 states. [2020-10-12 19:14:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28976 states to 28976 states and 38800 transitions. [2020-10-12 19:14:56,325 INFO L78 Accepts]: Start accepts. Automaton has 28976 states and 38800 transitions. Word has length 159 [2020-10-12 19:14:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:56,325 INFO L479 AbstractCegarLoop]: Abstraction has 28976 states and 38800 transitions. [2020-10-12 19:14:56,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 28976 states and 38800 transitions. [2020-10-12 19:14:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 19:14:56,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:56,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:14:56,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:14:56,341 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash -389717004, now seen corresponding path program 1 times [2020-10-12 19:14:56,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:56,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583645825] [2020-10-12 19:14:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 19:15:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:15:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:15:01,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:15:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:15:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:02,095 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-12 19:15:02,878 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:15:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:02,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583645825] [2020-10-12 19:15:02,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:02,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 19:15:02,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825290286] [2020-10-12 19:15:02,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:15:02,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:02,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:15:02,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:15:02,996 INFO L87 Difference]: Start difference. First operand 28976 states and 38800 transitions. Second operand 19 states. [2020-10-12 19:15:03,367 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-12 19:15:04,314 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-12 19:15:04,840 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-12 19:15:05,367 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-10-12 19:15:06,405 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-10-12 19:15:07,207 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2020-10-12 19:15:07,408 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:15:07,690 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:15:07,845 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-12 19:15:08,483 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-12 19:15:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:22,225 INFO L93 Difference]: Finished difference Result 74789 states and 105062 transitions. [2020-10-12 19:15:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:15:22,226 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-12 19:15:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:22,300 INFO L225 Difference]: With dead ends: 74789 [2020-10-12 19:15:22,300 INFO L226 Difference]: Without dead ends: 69546 [2020-10-12 19:15:22,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:15:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69546 states. [2020-10-12 19:15:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69546 to 29342. [2020-10-12 19:15:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29342 states. [2020-10-12 19:15:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29342 states to 29342 states and 39234 transitions. [2020-10-12 19:15:25,209 INFO L78 Accepts]: Start accepts. Automaton has 29342 states and 39234 transitions. Word has length 167 [2020-10-12 19:15:25,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:25,209 INFO L479 AbstractCegarLoop]: Abstraction has 29342 states and 39234 transitions. [2020-10-12 19:15:25,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:15:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 29342 states and 39234 transitions. [2020-10-12 19:15:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 19:15:25,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:25,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:15:25,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:15:25,227 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:25,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1080971106, now seen corresponding path program 1 times [2020-10-12 19:15:25,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:25,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765784429] [2020-10-12 19:15:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:30,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 19:15:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:15:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:15:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 19:15:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 19:15:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 19:15:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:31,427 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:15:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:31,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:31,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:31,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:15:31,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:31,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:31,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765784429] [2020-10-12 19:15:31,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:31,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-12 19:15:31,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733220517] [2020-10-12 19:15:31,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 19:15:31,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 19:15:31,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-12 19:15:31,506 INFO L87 Difference]: Start difference. First operand 29342 states and 39234 transitions. Second operand 21 states. [2020-10-12 19:15:31,845 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-12 19:15:33,066 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 261 DAG size of output: 260 [2020-10-12 19:15:36,046 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 19:15:37,082 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 19:15:37,401 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-12 19:15:37,640 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:15:37,896 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 19:15:38,134 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-12 19:15:38,617 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:15:38,821 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-12 19:15:39,073 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-12 19:15:40,100 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41