/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_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:21:39,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:21:39,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:21:39,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:21:39,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:21:39,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:21:39,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:21:39,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:21:39,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:21:39,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:21:39,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:21:39,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:21:39,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:21:39,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:21:39,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:21:39,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:21:39,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:21:39,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:21:39,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:21:39,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:21:39,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:21:39,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:21:39,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:21:39,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:21:39,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:21:39,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:21:39,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:21:39,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:21:39,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:21:39,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:21:39,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:21:39,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:21:39,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:21:39,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:21:39,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:21:39,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:21:39,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:21:39,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:21:39,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:21:39,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:21:39,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:21:39,686 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 20:21:39,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:21:39,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:21:39,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:21:39,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:21:39,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:21:39,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:21:39,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:21:39,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:21:39,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:21:39,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:21:39,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:21:39,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:21:39,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:21:39,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:21:39,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:21:39,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:21:39,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:21:39,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:21:39,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:21:39,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:21:39,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:21:39,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:21:39,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:21:39,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:21:39,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:21:39,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:21:39,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:21:39,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:21:39,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:21:39,731 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 20:21:40,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:21:40,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:21:40,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:21:40,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:21:40,068 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:21:40,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 20:21:40,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/963853533/e1640b7c63a243e2b94ad4702e819f12/FLAG1129af707 [2020-10-12 20:21:40,702 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:21:40,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 20:21:40,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/963853533/e1640b7c63a243e2b94ad4702e819f12/FLAG1129af707 [2020-10-12 20:21:40,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/963853533/e1640b7c63a243e2b94ad4702e819f12 [2020-10-12 20:21:40,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:21:40,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:21:40,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:21:40,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:21:40,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:21:40,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:21:40" (1/1) ... [2020-10-12 20:21:40,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:40, skipping insertion in model container [2020-10-12 20:21:40,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:21:40" (1/1) ... [2020-10-12 20:21:40,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:21:41,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:21:41,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:21:41,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:21:41,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:21:41,852 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:21:41,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41 WrapperNode [2020-10-12 20:21:41,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:21:41,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:21:41,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:21:41,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:21:41,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:41,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:41,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:41,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:41,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:42,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:42,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (1/1) ... [2020-10-12 20:21:42,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:21:42,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:21:42,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:21:42,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:21:42,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (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 20:21:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:21:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:21:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:21:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:21:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:21:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:21:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:21:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:21:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:21:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:21:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:21:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:21:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:21:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:21:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:21:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:21:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:21:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:21:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:21:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:21:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:21:43,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:21:43,589 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:21:43,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:21:43 BoogieIcfgContainer [2020-10-12 20:21:43,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:21:43,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:21:43,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:21:43,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:21:43,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:21:40" (1/3) ... [2020-10-12 20:21:43,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4cbf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:21:43, skipping insertion in model container [2020-10-12 20:21:43,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:21:41" (2/3) ... [2020-10-12 20:21:43,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4cbf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:21:43, skipping insertion in model container [2020-10-12 20:21:43,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:21:43" (3/3) ... [2020-10-12 20:21:43,605 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 20:21:43,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:21:43,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:21:43,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:21:43,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:21:43,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:21:43,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:21:43,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:21:43,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:21:43,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:21:43,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:21:43,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:21:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-12 20:21:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:21:43,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:43,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:21:43,708 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:43,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1511443852, now seen corresponding path program 1 times [2020-10-12 20:21:43,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:43,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277446859] [2020-10-12 20:21:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:49,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:49,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:21:49,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:21:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:21:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:21:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:21:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:21:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:21:50,015 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:21:50,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:50,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:50,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:21:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:50,120 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 20:21:50,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277446859] [2020-10-12 20:21:50,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:50,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:21:50,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828524022] [2020-10-12 20:21:50,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:21:50,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:50,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:21:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:21:50,156 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 7 states. [2020-10-12 20:21:50,804 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-12 20:21:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:53,544 INFO L93 Difference]: Finished difference Result 1547 states and 2632 transitions. [2020-10-12 20:21:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:21:53,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-12 20:21:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:53,577 INFO L225 Difference]: With dead ends: 1547 [2020-10-12 20:21:53,577 INFO L226 Difference]: Without dead ends: 1365 [2020-10-12 20:21:53,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:21:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-12 20:21:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 487. [2020-10-12 20:21:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-12 20:21:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 808 transitions. [2020-10-12 20:21:53,705 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 808 transitions. Word has length 122 [2020-10-12 20:21:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:53,706 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 808 transitions. [2020-10-12 20:21:53,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:21:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 808 transitions. [2020-10-12 20:21:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:21:53,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:53,712 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] [2020-10-12 20:21:53,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:21:53,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:53,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash -456049120, now seen corresponding path program 1 times [2020-10-12 20:21:53,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:53,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484872452] [2020-10-12 20:21:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:58,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:58,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:21:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:21:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:21:58,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:21:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:21:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:21:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:59,249 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:21:59,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:59,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:59,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:59,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:21:59,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:59,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:59,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:59,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:59,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:59,316 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 20:21:59,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484872452] [2020-10-12 20:21:59,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:59,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:21:59,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824711521] [2020-10-12 20:21:59,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:21:59,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:59,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:21:59,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:21:59,320 INFO L87 Difference]: Start difference. First operand 487 states and 808 transitions. Second operand 8 states. [2020-10-12 20:21:59,763 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:22:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:03,055 INFO L93 Difference]: Finished difference Result 3563 states and 5985 transitions. [2020-10-12 20:22:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:22:03,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-12 20:22:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:03,087 INFO L225 Difference]: With dead ends: 3563 [2020-10-12 20:22:03,087 INFO L226 Difference]: Without dead ends: 3273 [2020-10-12 20:22:03,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:22:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-12 20:22:03,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 1276. [2020-10-12 20:22:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-12 20:22:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2137 transitions. [2020-10-12 20:22:03,291 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2137 transitions. Word has length 123 [2020-10-12 20:22:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:03,294 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 2137 transitions. [2020-10-12 20:22:03,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:22:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2137 transitions. [2020-10-12 20:22:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:22:03,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:03,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:03,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:22:03,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1314231085, now seen corresponding path program 1 times [2020-10-12 20:22:03,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:03,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091160167] [2020-10-12 20:22:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:08,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:08,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:22:08,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:22:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 20:22:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:22:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:22:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:22:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:08,974 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:22:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:09,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:09,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:22:09,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:09,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:09,047 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 20:22:09,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091160167] [2020-10-12 20:22:09,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:09,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:22:09,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860077809] [2020-10-12 20:22:09,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:22:09,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:22:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:22:09,053 INFO L87 Difference]: Start difference. First operand 1276 states and 2137 transitions. Second operand 8 states. [2020-10-12 20:22:09,534 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:22:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:13,508 INFO L93 Difference]: Finished difference Result 10261 states and 17238 transitions. [2020-10-12 20:22:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:22:13,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-12 20:22:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:13,557 INFO L225 Difference]: With dead ends: 10261 [2020-10-12 20:22:13,558 INFO L226 Difference]: Without dead ends: 9288 [2020-10-12 20:22:13,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:22:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2020-10-12 20:22:13,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 3588. [2020-10-12 20:22:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-12 20:22:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 6017 transitions. [2020-10-12 20:22:13,865 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 6017 transitions. Word has length 124 [2020-10-12 20:22:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:13,866 INFO L479 AbstractCegarLoop]: Abstraction has 3588 states and 6017 transitions. [2020-10-12 20:22:13,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:22:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 6017 transitions. [2020-10-12 20:22:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:22:13,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:13,870 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] [2020-10-12 20:22:13,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:22:13,871 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:13,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2143510201, now seen corresponding path program 1 times [2020-10-12 20:22:13,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:13,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361025980] [2020-10-12 20:22:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:18,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:18,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:22:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:22:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 20:22:18,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:22:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:22:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:22:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:19,446 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:22:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:19,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:19,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:19,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:19,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:22:19,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:19,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:19,508 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 20:22:19,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361025980] [2020-10-12 20:22:19,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:19,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:22:19,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645735910] [2020-10-12 20:22:19,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:22:19,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:19,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:22:19,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:22:19,511 INFO L87 Difference]: Start difference. First operand 3588 states and 6017 transitions. Second operand 8 states. [2020-10-12 20:22:20,007 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:22:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:23,778 INFO L93 Difference]: Finished difference Result 29278 states and 49100 transitions. [2020-10-12 20:22:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:22:23,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-12 20:22:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:23,879 INFO L225 Difference]: With dead ends: 29278 [2020-10-12 20:22:23,880 INFO L226 Difference]: Without dead ends: 26113 [2020-10-12 20:22:23,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:22:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26113 states. [2020-10-12 20:22:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26113 to 10006. [2020-10-12 20:22:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10006 states. [2020-10-12 20:22:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 16761 transitions. [2020-10-12 20:22:24,949 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 16761 transitions. Word has length 125 [2020-10-12 20:22:24,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:24,950 INFO L479 AbstractCegarLoop]: Abstraction has 10006 states and 16761 transitions. [2020-10-12 20:22:24,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:22:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 16761 transitions. [2020-10-12 20:22:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:22:24,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:24,953 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] [2020-10-12 20:22:24,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:22:24,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2076800998, now seen corresponding path program 1 times [2020-10-12 20:22:24,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:24,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073250558] [2020-10-12 20:22:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:22:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:22:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 20:22:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:22:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:22:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:22:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:30,554 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:22:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:30,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:30,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:30,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:22:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:22:30,626 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 20:22:30,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073250558] [2020-10-12 20:22:30,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:30,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:22:30,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796281175] [2020-10-12 20:22:30,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:22:30,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:30,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:22:30,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:22:30,629 INFO L87 Difference]: Start difference. First operand 10006 states and 16761 transitions. Second operand 8 states. [2020-10-12 20:22:31,071 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:22:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:37,538 INFO L93 Difference]: Finished difference Result 84894 states and 142091 transitions. [2020-10-12 20:22:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:22:37,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-12 20:22:37,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:37,746 INFO L225 Difference]: With dead ends: 84894 [2020-10-12 20:22:37,746 INFO L226 Difference]: Without dead ends: 75391 [2020-10-12 20:22:37,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:22:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75391 states. [2020-10-12 20:22:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75391 to 27916. [2020-10-12 20:22:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27916 states. [2020-10-12 20:22:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27916 states to 27916 states and 46681 transitions. [2020-10-12 20:22:41,130 INFO L78 Accepts]: Start accepts. Automaton has 27916 states and 46681 transitions. Word has length 126 [2020-10-12 20:22:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:41,131 INFO L479 AbstractCegarLoop]: Abstraction has 27916 states and 46681 transitions. [2020-10-12 20:22:41,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:22:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 27916 states and 46681 transitions. [2020-10-12 20:22:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:22:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:41,134 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] [2020-10-12 20:22:41,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:22:41,135 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186821, now seen corresponding path program 1 times [2020-10-12 20:22:41,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:41,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056441023] [2020-10-12 20:22:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:46,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:22:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:22:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:22:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:22:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:22:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:46,855 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:22:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:46,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:22:46,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:22:46,964 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 20:22:46,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056441023] [2020-10-12 20:22:46,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:46,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:46,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286683654] [2020-10-12 20:22:46,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:46,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:46,968 INFO L87 Difference]: Start difference. First operand 27916 states and 46681 transitions. Second operand 5 states. [2020-10-12 20:22:47,536 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-12 20:22:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:54,037 INFO L93 Difference]: Finished difference Result 106668 states and 178171 transitions. [2020-10-12 20:22:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:22:54,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:22:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:54,213 INFO L225 Difference]: With dead ends: 106668 [2020-10-12 20:22:54,213 INFO L226 Difference]: Without dead ends: 79123 [2020-10-12 20:22:54,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:22:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79123 states. [2020-10-12 20:22:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79123 to 54396. [2020-10-12 20:22:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54396 states. [2020-10-12 20:22:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54396 states to 54396 states and 90814 transitions. [2020-10-12 20:22:57,874 INFO L78 Accepts]: Start accepts. Automaton has 54396 states and 90814 transitions. Word has length 127 [2020-10-12 20:22:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:57,875 INFO L479 AbstractCegarLoop]: Abstraction has 54396 states and 90814 transitions. [2020-10-12 20:22:57,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 54396 states and 90814 transitions. [2020-10-12 20:22:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:22:57,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:57,885 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] [2020-10-12 20:22:57,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:22:57,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:57,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1459635083, now seen corresponding path program 1 times [2020-10-12 20:22:57,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:57,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257021073] [2020-10-12 20:22:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:23:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:03,551 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:23:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:03,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:03,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:23:03,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:23:03,699 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 20:23:03,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257021073] [2020-10-12 20:23:03,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:03,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:03,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822442454] [2020-10-12 20:23:03,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:03,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:03,702 INFO L87 Difference]: Start difference. First operand 54396 states and 90814 transitions. Second operand 5 states. [2020-10-12 20:23:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:13,603 INFO L93 Difference]: Finished difference Result 160694 states and 268272 transitions. [2020-10-12 20:23:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:13,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:23:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:13,847 INFO L225 Difference]: With dead ends: 160694 [2020-10-12 20:23:13,847 INFO L226 Difference]: Without dead ends: 106375 [2020-10-12 20:23:13,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106375 states. [2020-10-12 20:23:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106375 to 106373. [2020-10-12 20:23:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106373 states. [2020-10-12 20:23:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106373 states to 106373 states and 176781 transitions. [2020-10-12 20:23:23,736 INFO L78 Accepts]: Start accepts. Automaton has 106373 states and 176781 transitions. Word has length 127 [2020-10-12 20:23:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:23,737 INFO L479 AbstractCegarLoop]: Abstraction has 106373 states and 176781 transitions. [2020-10-12 20:23:23,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand 106373 states and 176781 transitions. [2020-10-12 20:23:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:23:23,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:23,742 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] [2020-10-12 20:23:23,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:23:23,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1319939168, now seen corresponding path program 1 times [2020-10-12 20:23:23,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:23,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980501975] [2020-10-12 20:23:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:23:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:23:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6329 [2020-10-12 20:23:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:23:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:23:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:23:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:30,624 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:23:30,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:30,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:30,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:30,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:30,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:23:30,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:30,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:30,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:30,684 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 20:23:30,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980501975] [2020-10-12 20:23:30,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:30,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:23:30,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46269400] [2020-10-12 20:23:30,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:23:30,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:30,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:23:30,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:23:30,692 INFO L87 Difference]: Start difference. First operand 106373 states and 176781 transitions. Second operand 7 states. [2020-10-12 20:23:31,109 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:24:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:04,914 INFO L93 Difference]: Finished difference Result 518498 states and 861657 transitions. [2020-10-12 20:24:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:24:04,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-12 20:24:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:05,716 INFO L225 Difference]: With dead ends: 518498 [2020-10-12 20:24:05,716 INFO L226 Difference]: Without dead ends: 413120 [2020-10-12 20:24:05,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:24:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413120 states. [2020-10-12 20:24:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413120 to 202154. [2020-10-12 20:24:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202154 states. [2020-10-12 20:24:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202154 states to 202154 states and 335308 transitions. [2020-10-12 20:24:27,418 INFO L78 Accepts]: Start accepts. Automaton has 202154 states and 335308 transitions. Word has length 127 [2020-10-12 20:24:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:27,418 INFO L479 AbstractCegarLoop]: Abstraction has 202154 states and 335308 transitions. [2020-10-12 20:24:27,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:24:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 202154 states and 335308 transitions. [2020-10-12 20:24:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:24:27,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:27,421 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] [2020-10-12 20:24:27,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:24:27,422 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2081790590, now seen corresponding path program 1 times [2020-10-12 20:24:27,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:27,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477242576] [2020-10-12 20:24:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:24:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:24:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:32,934 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:24:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:32,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:32,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:32,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:24:32,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:32,993 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 20:24:32,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477242576] [2020-10-12 20:24:32,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:32,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:24:32,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266242915] [2020-10-12 20:24:32,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:24:32,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:32,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:24:32,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:24:32,995 INFO L87 Difference]: Start difference. First operand 202154 states and 335308 transitions. Second operand 7 states. [2020-10-12 20:24:33,414 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 271