/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:53:01,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:53:01,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:53:01,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:53:01,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:53:01,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:53:01,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:53:01,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:53:01,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:53:01,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:53:01,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:53:01,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:53:01,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:53:01,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:53:01,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:53:01,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:53:01,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:53:01,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:53:01,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:53:01,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:53:01,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:53:01,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:53:01,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:53:01,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:53:01,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:53:01,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:53:01,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:53:01,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:53:01,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:53:01,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:53:01,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:53:01,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:53:01,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:53:01,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:53:01,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:53:01,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:53:01,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:53:01,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:53:01,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:53:01,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:53:01,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:53:01,780 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 [2020-10-15 03:53:01,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:53:01,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:53:01,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:53:01,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:53:01,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:53:01,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:53:01,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:53:01,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:53:01,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:53:01,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:53:01,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:53:01,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:53:01,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:53:01,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:53:01,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:53:01,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:53:01,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:53:01,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:53:01,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:53:01,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:53:01,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:53:01,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:53:01,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:53:01,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:53:01,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:53:01,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:53:01,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:53:01,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:53:01,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:53:01,832 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:53:02,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:53:02,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:53:02,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:53:02,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:53:02,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:53:02,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:53:02,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02842da04/f2d230003b01486f89804626044867b4/FLAG80308e20b [2020-10-15 03:53:02,718 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:53:02,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:53:02,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02842da04/f2d230003b01486f89804626044867b4/FLAG80308e20b [2020-10-15 03:53:03,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02842da04/f2d230003b01486f89804626044867b4 [2020-10-15 03:53:03,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:53:03,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:53:03,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:53:03,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:53:03,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:53:03,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf49487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03, skipping insertion in model container [2020-10-15 03:53:03,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:53:03,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:53:03,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:53:03,519 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:53:03,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:53:03,653 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:53:03,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03 WrapperNode [2020-10-15 03:53:03,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:53:03,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:53:03,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:53:03,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:53:03,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (1/1) ... [2020-10-15 03:53:03,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:53:03,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:53:03,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:53:03,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:53:03,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (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 [2020-10-15 03:53:03,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:53:03,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:53:03,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:53:03,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:53:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:53:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:53:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:53:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:53:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:53:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:53:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:53:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:53:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:53:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:53:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:53:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:53:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:53:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:53:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:53:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:53:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:53:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:53:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:53:04,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:53:04,912 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:53:04,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:53:04 BoogieIcfgContainer [2020-10-15 03:53:04,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:53:04,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:53:04,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:53:04,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:53:04,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:53:03" (1/3) ... [2020-10-15 03:53:04,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6820242b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:53:04, skipping insertion in model container [2020-10-15 03:53:04,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:53:03" (2/3) ... [2020-10-15 03:53:04,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6820242b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:53:04, skipping insertion in model container [2020-10-15 03:53:04,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:53:04" (3/3) ... [2020-10-15 03:53:04,926 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:53:04,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:53:04,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:53:04,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:53:04,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:53:04,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:53:04,982 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:53:04,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:53:04,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:53:04,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:53:04,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:53:04,983 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:53:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-10-15 03:53:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:53:05,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:05,017 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] [2020-10-15 03:53:05,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1170257874, now seen corresponding path program 1 times [2020-10-15 03:53:05,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:05,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352405129] [2020-10-15 03:53:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:05,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:08,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:08,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:53:08,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:53:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-15 03:53:08,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:08,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:08,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:53:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:53:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:53:08,457 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:08,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:08,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:08,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 03:53:08,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:08,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:53:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:08,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352405129] [2020-10-15 03:53:08,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:08,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:53:08,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768041464] [2020-10-15 03:53:08,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:08,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:08,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:08,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:08,635 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 8 states. [2020-10-15 03:53:09,082 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:53:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:10,366 INFO L93 Difference]: Finished difference Result 878 states and 1413 transitions. [2020-10-15 03:53:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:53:10,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-15 03:53:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:10,392 INFO L225 Difference]: With dead ends: 878 [2020-10-15 03:53:10,393 INFO L226 Difference]: Without dead ends: 751 [2020-10-15 03:53:10,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:53:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-10-15 03:53:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 332. [2020-10-15 03:53:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-15 03:53:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 497 transitions. [2020-10-15 03:53:10,516 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 497 transitions. Word has length 84 [2020-10-15 03:53:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:10,517 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 497 transitions. [2020-10-15 03:53:10,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:53:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 497 transitions. [2020-10-15 03:53:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:53:10,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:10,521 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] [2020-10-15 03:53:10,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:53:10,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:10,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:10,522 INFO L82 PathProgramCache]: Analyzing trace with hash 2097746024, now seen corresponding path program 1 times [2020-10-15 03:53:10,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:10,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203261165] [2020-10-15 03:53:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:12,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:12,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:53:12,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:53:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-15 03:53:12,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:12,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:53:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:53:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:12,607 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:12,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:12,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:12,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:53:12,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:12,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:12,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:53:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:12,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203261165] [2020-10-15 03:53:12,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:12,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:53:12,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903011848] [2020-10-15 03:53:12,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:12,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:12,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:12,731 INFO L87 Difference]: Start difference. First operand 332 states and 497 transitions. Second operand 8 states. [2020-10-15 03:53:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:15,489 INFO L93 Difference]: Finished difference Result 1428 states and 2214 transitions. [2020-10-15 03:53:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:53:15,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-15 03:53:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:15,501 INFO L225 Difference]: With dead ends: 1428 [2020-10-15 03:53:15,502 INFO L226 Difference]: Without dead ends: 1180 [2020-10-15 03:53:15,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-15 03:53:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1172. [2020-10-15 03:53:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-10-15 03:53:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1810 transitions. [2020-10-15 03:53:15,611 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1810 transitions. Word has length 85 [2020-10-15 03:53:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:15,613 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1810 transitions. [2020-10-15 03:53:15,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:53:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1810 transitions. [2020-10-15 03:53:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:53:15,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:15,623 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] [2020-10-15 03:53:15,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:53:15,623 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1493181435, now seen corresponding path program 1 times [2020-10-15 03:53:15,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:15,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318644106] [2020-10-15 03:53:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:16,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:16,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:53:16,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:53:16,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 03:53:16,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:16,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:53:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:53:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:16,540 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:16,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:16,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:16,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:53:16,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:16,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:16,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:16,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:16,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318644106] [2020-10-15 03:53:16,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:16,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:53:16,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119557172] [2020-10-15 03:53:16,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:53:16,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:16,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:53:16,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:53:16,606 INFO L87 Difference]: Start difference. First operand 1172 states and 1810 transitions. Second operand 6 states. [2020-10-15 03:53:16,791 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:53:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:17,962 INFO L93 Difference]: Finished difference Result 3211 states and 5014 transitions. [2020-10-15 03:53:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:17,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:53:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:17,974 INFO L225 Difference]: With dead ends: 3211 [2020-10-15 03:53:17,974 INFO L226 Difference]: Without dead ends: 2085 [2020-10-15 03:53:17,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-10-15 03:53:18,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-10-15 03:53:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-15 03:53:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3233 transitions. [2020-10-15 03:53:18,119 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3233 transitions. Word has length 86 [2020-10-15 03:53:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:18,120 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 3233 transitions. [2020-10-15 03:53:18,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:53:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3233 transitions. [2020-10-15 03:53:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:53:18,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:18,124 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] [2020-10-15 03:53:18,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:53:18,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:18,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:18,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1984786538, now seen corresponding path program 1 times [2020-10-15 03:53:18,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:18,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216473234] [2020-10-15 03:53:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:18,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:53:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:53:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-15 03:53:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:53:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:53:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:18,866 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:18,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:18,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:18,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:53:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:53:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:18,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216473234] [2020-10-15 03:53:18,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:18,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:53:18,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563832002] [2020-10-15 03:53:18,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:53:18,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:18,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:53:18,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:53:18,944 INFO L87 Difference]: Start difference. First operand 2083 states and 3233 transitions. Second operand 6 states. [2020-10-15 03:53:19,184 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:53:20,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:20,452 INFO L93 Difference]: Finished difference Result 5840 states and 9114 transitions. [2020-10-15 03:53:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:20,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:53:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:20,474 INFO L225 Difference]: With dead ends: 5840 [2020-10-15 03:53:20,474 INFO L226 Difference]: Without dead ends: 3819 [2020-10-15 03:53:20,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2020-10-15 03:53:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3817. [2020-10-15 03:53:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2020-10-15 03:53:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 5916 transitions. [2020-10-15 03:53:20,765 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 5916 transitions. Word has length 86 [2020-10-15 03:53:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:20,765 INFO L479 AbstractCegarLoop]: Abstraction has 3817 states and 5916 transitions. [2020-10-15 03:53:20,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:53:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 5916 transitions. [2020-10-15 03:53:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:53:20,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:20,775 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] [2020-10-15 03:53:20,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:53:20,776 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 453259047, now seen corresponding path program 1 times [2020-10-15 03:53:20,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:20,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993674997] [2020-10-15 03:53:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:21,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:53:21,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:53:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-15 03:53:21,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:21,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:21,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:53:21,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:21,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:53:21,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:21,581 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:21,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:21,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:53:21,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:21,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:21,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:21,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:21,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993674997] [2020-10-15 03:53:21,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:21,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:53:21,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563665999] [2020-10-15 03:53:21,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:53:21,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:21,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:53:21,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:53:21,642 INFO L87 Difference]: Start difference. First operand 3817 states and 5916 transitions. Second operand 6 states. [2020-10-15 03:53:21,822 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:53:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:23,081 INFO L93 Difference]: Finished difference Result 10827 states and 16816 transitions. [2020-10-15 03:53:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:23,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:53:23,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:23,121 INFO L225 Difference]: With dead ends: 10827 [2020-10-15 03:53:23,122 INFO L226 Difference]: Without dead ends: 7095 [2020-10-15 03:53:23,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2020-10-15 03:53:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7093. [2020-10-15 03:53:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-15 03:53:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 10940 transitions. [2020-10-15 03:53:23,580 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 10940 transitions. Word has length 86 [2020-10-15 03:53:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:23,580 INFO L479 AbstractCegarLoop]: Abstraction has 7093 states and 10940 transitions. [2020-10-15 03:53:23,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:53:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 10940 transitions. [2020-10-15 03:53:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:53:23,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:23,586 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] [2020-10-15 03:53:23,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:53:23,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:23,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1814791496, now seen corresponding path program 1 times [2020-10-15 03:53:23,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:23,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188934748] [2020-10-15 03:53:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:24,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:53:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:53:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-15 03:53:24,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:24,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:53:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:53:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:24,357 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:53:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:24,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:24,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188934748] [2020-10-15 03:53:24,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:24,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:53:24,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806868712] [2020-10-15 03:53:24,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:53:24,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:24,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:53:24,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:53:24,412 INFO L87 Difference]: Start difference. First operand 7093 states and 10940 transitions. Second operand 6 states. [2020-10-15 03:53:24,608 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:53:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:26,332 INFO L93 Difference]: Finished difference Result 20256 states and 31252 transitions. [2020-10-15 03:53:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:26,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:53:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:26,387 INFO L225 Difference]: With dead ends: 20256 [2020-10-15 03:53:26,387 INFO L226 Difference]: Without dead ends: 13278 [2020-10-15 03:53:26,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:53:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13278 states. [2020-10-15 03:53:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13278 to 13276. [2020-10-15 03:53:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13276 states. [2020-10-15 03:53:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 20350 transitions. [2020-10-15 03:53:27,248 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 20350 transitions. Word has length 86 [2020-10-15 03:53:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:27,249 INFO L479 AbstractCegarLoop]: Abstraction has 13276 states and 20350 transitions. [2020-10-15 03:53:27,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:53:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 20350 transitions. [2020-10-15 03:53:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:53:27,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:27,257 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] [2020-10-15 03:53:27,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:53:27,258 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1573073481, now seen corresponding path program 1 times [2020-10-15 03:53:27,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:27,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90282425] [2020-10-15 03:53:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:27,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:53:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:53:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-15 03:53:27,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:27,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:53:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:53:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:28,071 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:53:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:28,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:28,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90282425] [2020-10-15 03:53:28,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:28,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:53:28,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171670658] [2020-10-15 03:53:28,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:53:28,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:28,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:53:28,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:53:28,130 INFO L87 Difference]: Start difference. First operand 13276 states and 20350 transitions. Second operand 6 states. [2020-10-15 03:53:28,311 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:53:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:30,354 INFO L93 Difference]: Finished difference Result 38565 states and 59175 transitions. [2020-10-15 03:53:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:30,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-15 03:53:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:30,414 INFO L225 Difference]: With dead ends: 38565 [2020-10-15 03:53:30,415 INFO L226 Difference]: Without dead ends: 25438 [2020-10-15 03:53:30,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25438 states. [2020-10-15 03:53:32,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25438 to 25436. [2020-10-15 03:53:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25436 states. [2020-10-15 03:53:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25436 states to 25436 states and 38841 transitions. [2020-10-15 03:53:32,485 INFO L78 Accepts]: Start accepts. Automaton has 25436 states and 38841 transitions. Word has length 86 [2020-10-15 03:53:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:32,485 INFO L479 AbstractCegarLoop]: Abstraction has 25436 states and 38841 transitions. [2020-10-15 03:53:32,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:53:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 25436 states and 38841 transitions. [2020-10-15 03:53:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:53:32,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:32,494 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] [2020-10-15 03:53:32,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:53:32,495 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash 88371251, now seen corresponding path program 1 times [2020-10-15 03:53:32,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:32,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842304336] [2020-10-15 03:53:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:32,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:53:34,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:53:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-15 03:53:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:34,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:53:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:53:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:53:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:35,064 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:35,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:35,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:35,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:53:35,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:35,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:35,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:35,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:35,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842304336] [2020-10-15 03:53:35,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:35,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:53:35,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077657385] [2020-10-15 03:53:35,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:53:35,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:53:35,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:53:35,199 INFO L87 Difference]: Start difference. First operand 25436 states and 38841 transitions. Second operand 9 states. [2020-10-15 03:53:35,415 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:53:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:44,650 INFO L93 Difference]: Finished difference Result 145930 states and 222205 transitions. [2020-10-15 03:53:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:53:44,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:53:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:44,923 INFO L225 Difference]: With dead ends: 145930 [2020-10-15 03:53:44,923 INFO L226 Difference]: Without dead ends: 121142 [2020-10-15 03:53:44,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:53:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121142 states. [2020-10-15 03:53:49,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121142 to 25518. [2020-10-15 03:53:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25518 states. [2020-10-15 03:53:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25518 states to 25518 states and 38930 transitions. [2020-10-15 03:53:49,202 INFO L78 Accepts]: Start accepts. Automaton has 25518 states and 38930 transitions. Word has length 87 [2020-10-15 03:53:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:49,202 INFO L479 AbstractCegarLoop]: Abstraction has 25518 states and 38930 transitions. [2020-10-15 03:53:49,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:53:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 25518 states and 38930 transitions. [2020-10-15 03:53:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:53:49,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:49,210 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] [2020-10-15 03:53:49,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:53:49,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash 20295635, now seen corresponding path program 1 times [2020-10-15 03:53:49,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:49,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314632535] [2020-10-15 03:53:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:49,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:53:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:53:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1519 [2020-10-15 03:53:50,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:50,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:53:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:53:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:53:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:51,097 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:51,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:51,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:51,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:51,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:53:51,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:51,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:51,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:53:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:51,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314632535] [2020-10-15 03:53:51,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:51,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:53:51,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793222047] [2020-10-15 03:53:51,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:53:51,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:51,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:53:51,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:53:51,136 INFO L87 Difference]: Start difference. First operand 25518 states and 38930 transitions. Second operand 9 states. [2020-10-15 03:53:51,414 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:54:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:05,695 INFO L93 Difference]: Finished difference Result 143634 states and 218749 transitions. [2020-10-15 03:54:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:54:05,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:54:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:05,908 INFO L225 Difference]: With dead ends: 143634 [2020-10-15 03:54:05,909 INFO L226 Difference]: Without dead ends: 123146 [2020-10-15 03:54:05,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:54:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123146 states. [2020-10-15 03:54:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123146 to 25813. [2020-10-15 03:54:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25813 states. [2020-10-15 03:54:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25813 states to 25813 states and 39304 transitions. [2020-10-15 03:54:09,166 INFO L78 Accepts]: Start accepts. Automaton has 25813 states and 39304 transitions. Word has length 87 [2020-10-15 03:54:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:09,167 INFO L479 AbstractCegarLoop]: Abstraction has 25813 states and 39304 transitions. [2020-10-15 03:54:09,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:54:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25813 states and 39304 transitions. [2020-10-15 03:54:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:54:09,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:09,174 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] [2020-10-15 03:54:09,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:54:09,174 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:09,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1569140595, now seen corresponding path program 1 times [2020-10-15 03:54:09,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:09,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877428287] [2020-10-15 03:54:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:10,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:10,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:54:10,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:54:10,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-15 03:54:10,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:10,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:54:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:54:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:54:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:10,715 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:54:11,118 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:11,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:11,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:11,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:54:11,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:11,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:54:11,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877428287] [2020-10-15 03:54:11,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:11,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:54:11,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097018312] [2020-10-15 03:54:11,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:54:11,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:11,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:54:11,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:54:11,187 INFO L87 Difference]: Start difference. First operand 25813 states and 39304 transitions. Second operand 9 states. [2020-10-15 03:54:11,416 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:54:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:27,295 INFO L93 Difference]: Finished difference Result 140591 states and 214044 transitions. [2020-10-15 03:54:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:54:27,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:54:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:27,450 INFO L225 Difference]: With dead ends: 140591 [2020-10-15 03:54:27,451 INFO L226 Difference]: Without dead ends: 124800 [2020-10-15 03:54:27,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:54:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124800 states. [2020-10-15 03:54:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124800 to 26343. [2020-10-15 03:54:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26343 states. [2020-10-15 03:54:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 39996 transitions. [2020-10-15 03:54:31,150 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 39996 transitions. Word has length 87 [2020-10-15 03:54:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:31,150 INFO L479 AbstractCegarLoop]: Abstraction has 26343 states and 39996 transitions. [2020-10-15 03:54:31,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:54:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 39996 transitions. [2020-10-15 03:54:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:54:31,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:31,156 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] [2020-10-15 03:54:31,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:54:31,157 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1703997203, now seen corresponding path program 1 times [2020-10-15 03:54:31,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:31,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857374655] [2020-10-15 03:54:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:32,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:54:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:54:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-15 03:54:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:32,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:54:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:54:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:54:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:33,513 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:33,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:33,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:54:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:33,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:54:33,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857374655] [2020-10-15 03:54:33,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:33,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:54:33,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101727008] [2020-10-15 03:54:33,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:54:33,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:33,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:54:33,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:54:33,556 INFO L87 Difference]: Start difference. First operand 26343 states and 39996 transitions. Second operand 9 states. [2020-10-15 03:54:33,766 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:54:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:50,720 INFO L93 Difference]: Finished difference Result 117954 states and 178813 transitions. [2020-10-15 03:54:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 03:54:50,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:54:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:50,851 INFO L225 Difference]: With dead ends: 117954 [2020-10-15 03:54:50,851 INFO L226 Difference]: Without dead ends: 107104 [2020-10-15 03:54:50,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:54:50,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107104 states. [2020-10-15 03:54:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107104 to 27131. [2020-10-15 03:54:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27131 states. [2020-10-15 03:54:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27131 states to 27131 states and 41082 transitions. [2020-10-15 03:54:55,205 INFO L78 Accepts]: Start accepts. Automaton has 27131 states and 41082 transitions. Word has length 87 [2020-10-15 03:54:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:55,205 INFO L479 AbstractCegarLoop]: Abstraction has 27131 states and 41082 transitions. [2020-10-15 03:54:55,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:54:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 27131 states and 41082 transitions. [2020-10-15 03:54:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:54:55,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:55,212 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] [2020-10-15 03:54:55,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:54:55,213 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:55,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:55,213 INFO L82 PathProgramCache]: Analyzing trace with hash 749399731, now seen corresponding path program 1 times [2020-10-15 03:54:55,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:55,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544860911] [2020-10-15 03:54:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1598 [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:54:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:54:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:54:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:57,187 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:54:57,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:57,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:54:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:54:57,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544860911] [2020-10-15 03:54:57,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:57,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:54:57,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168932959] [2020-10-15 03:54:57,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:54:57,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:54:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:54:57,248 INFO L87 Difference]: Start difference. First operand 27131 states and 41082 transitions. Second operand 9 states. [2020-10-15 03:54:57,452 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:55:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:16,695 INFO L93 Difference]: Finished difference Result 116434 states and 176897 transitions. [2020-10-15 03:55:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:55:16,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-15 03:55:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:16,829 INFO L225 Difference]: With dead ends: 116434 [2020-10-15 03:55:16,829 INFO L226 Difference]: Without dead ends: 110451 [2020-10-15 03:55:16,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:55:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110451 states. [2020-10-15 03:55:21,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110451 to 26893. [2020-10-15 03:55:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26893 states. [2020-10-15 03:55:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26893 states to 26893 states and 40728 transitions. [2020-10-15 03:55:21,304 INFO L78 Accepts]: Start accepts. Automaton has 26893 states and 40728 transitions. Word has length 87 [2020-10-15 03:55:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:21,304 INFO L479 AbstractCegarLoop]: Abstraction has 26893 states and 40728 transitions. [2020-10-15 03:55:21,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:55:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 26893 states and 40728 transitions. [2020-10-15 03:55:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:55:21,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:21,312 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] [2020-10-15 03:55:21,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:55:21,312 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:21,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1283726391, now seen corresponding path program 1 times [2020-10-15 03:55:21,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:21,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966998480] [2020-10-15 03:55:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:21,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:21,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:55:21,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-15 03:55:21,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:21,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:55:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 03:55:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:55:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:21,660 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:21,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:21,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966998480] [2020-10-15 03:55:21,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:21,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:55:21,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015618705] [2020-10-15 03:55:21,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:55:21,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:55:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:21,683 INFO L87 Difference]: Start difference. First operand 26893 states and 40728 transitions. Second operand 5 states. [2020-10-15 03:55:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:30,558 INFO L93 Difference]: Finished difference Result 52015 states and 78841 transitions. [2020-10-15 03:55:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:55:30,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-15 03:55:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:30,617 INFO L225 Difference]: With dead ends: 52015 [2020-10-15 03:55:30,618 INFO L226 Difference]: Without dead ends: 52013 [2020-10-15 03:55:30,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:55:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52013 states. [2020-10-15 03:55:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52013 to 27533. [2020-10-15 03:55:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27533 states. [2020-10-15 03:55:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27533 states to 27533 states and 41368 transitions. [2020-10-15 03:55:35,181 INFO L78 Accepts]: Start accepts. Automaton has 27533 states and 41368 transitions. Word has length 88 [2020-10-15 03:55:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:35,182 INFO L479 AbstractCegarLoop]: Abstraction has 27533 states and 41368 transitions. [2020-10-15 03:55:35,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:55:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 27533 states and 41368 transitions. [2020-10-15 03:55:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:55:35,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:35,190 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] [2020-10-15 03:55:35,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:55:35,191 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1413771914, now seen corresponding path program 1 times [2020-10-15 03:55:35,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:35,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521213791] [2020-10-15 03:55:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:36,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:55:36,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:55:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-10-15 03:55:36,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:36,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:55:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:55:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:55:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:36,951 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:36,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:36,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:36,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:36,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:36,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521213791] [2020-10-15 03:55:36,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:36,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:55:36,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340259144] [2020-10-15 03:55:36,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:55:36,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:36,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:55:36,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:55:36,977 INFO L87 Difference]: Start difference. First operand 27533 states and 41368 transitions. Second operand 8 states. [2020-10-15 03:55:37,180 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:55:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:52,383 INFO L93 Difference]: Finished difference Result 94920 states and 144233 transitions. [2020-10-15 03:55:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:55:52,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-15 03:55:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:52,472 INFO L225 Difference]: With dead ends: 94920 [2020-10-15 03:55:52,472 INFO L226 Difference]: Without dead ends: 82358 [2020-10-15 03:55:52,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:55:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82358 states. [2020-10-15 03:56:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82358 to 50042. [2020-10-15 03:56:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50042 states. [2020-10-15 03:56:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50042 states to 50042 states and 75494 transitions. [2020-10-15 03:56:01,182 INFO L78 Accepts]: Start accepts. Automaton has 50042 states and 75494 transitions. Word has length 89 [2020-10-15 03:56:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:01,182 INFO L479 AbstractCegarLoop]: Abstraction has 50042 states and 75494 transitions. [2020-10-15 03:56:01,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:56:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 50042 states and 75494 transitions. [2020-10-15 03:56:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:56:01,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:01,195 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] [2020-10-15 03:56:01,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:56:01,196 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:01,196 INFO L82 PathProgramCache]: Analyzing trace with hash -862358602, now seen corresponding path program 1 times [2020-10-15 03:56:01,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:01,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50328940] [2020-10-15 03:56:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:01,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:01,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:56:01,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 03:56:01,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:01,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:56:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:56:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 03:56:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:01,531 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:01,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:01,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:56:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:01,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:01,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50328940] [2020-10-15 03:56:01,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:01,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:56:01,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077078769] [2020-10-15 03:56:01,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:56:01,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:01,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:56:01,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:01,561 INFO L87 Difference]: Start difference. First operand 50042 states and 75494 transitions. Second operand 5 states. [2020-10-15 03:56:01,755 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:56:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:19,028 INFO L93 Difference]: Finished difference Result 136638 states and 206024 transitions. [2020-10-15 03:56:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:56:19,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-15 03:56:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:19,135 INFO L225 Difference]: With dead ends: 136638 [2020-10-15 03:56:19,136 INFO L226 Difference]: Without dead ends: 89196 [2020-10-15 03:56:19,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:56:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89196 states. [2020-10-15 03:56:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89196 to 88650. [2020-10-15 03:56:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88650 states. [2020-10-15 03:56:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88650 states to 88650 states and 132534 transitions. [2020-10-15 03:56:34,700 INFO L78 Accepts]: Start accepts. Automaton has 88650 states and 132534 transitions. Word has length 89 [2020-10-15 03:56:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:34,700 INFO L479 AbstractCegarLoop]: Abstraction has 88650 states and 132534 transitions. [2020-10-15 03:56:34,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:56:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 88650 states and 132534 transitions. [2020-10-15 03:56:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:56:34,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:34,709 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] [2020-10-15 03:56:34,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:56:34,709 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:34,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:34,709 INFO L82 PathProgramCache]: Analyzing trace with hash -885359912, now seen corresponding path program 1 times [2020-10-15 03:56:34,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:34,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678025107] [2020-10-15 03:56:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:56:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-10-15 03:56:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:36,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:56:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:56:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:36,230 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:36,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:36,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678025107] [2020-10-15 03:56:36,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:36,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:36,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696787921] [2020-10-15 03:56:36,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:36,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:36,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:36,256 INFO L87 Difference]: Start difference. First operand 88650 states and 132534 transitions. Second operand 8 states. [2020-10-15 03:56:36,463 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 156