/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/eca-rers2012/Problem15_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:23:10,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:23:10,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:23:10,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:23:10,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:23:10,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:23:10,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:23:10,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:23:10,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:23:10,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:23:10,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:23:10,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:23:10,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:23:10,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:23:10,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:23:10,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:23:10,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:23:10,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:23:10,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:23:10,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:23:10,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:23:10,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:23:10,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:23:10,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:23:10,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:23:10,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:23:10,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:23:10,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:23:10,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:23:10,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:23:10,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:23:10,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:23:10,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:23:10,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:23:10,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:23:10,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:23:10,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:23:10,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:23:10,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:23:10,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:23:10,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:23:10,698 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 [2020-10-14 03:23:10,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:23:10,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:23:10,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:23:10,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:23:10,755 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:23:10,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:23:10,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:23:10,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:23:10,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:23:10,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:23:10,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:23:10,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:23:10,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:23:10,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:23:10,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:23:10,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:23:10,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:23:10,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:23:10,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:23:10,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:23:10,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:23:10,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:23:10,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:23:10,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:23:10,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:23:10,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:23:10,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:23:10,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:23:10,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:23:10,762 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:23:11,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:23:11,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:23:11,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:23:11,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:23:11,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:23:11,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-14 03:23:11,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7f15a66/5de717c807244372841e545b940f0c4d/FLAGfcd618ded [2020-10-14 03:23:11,789 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:23:11,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-14 03:23:11,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7f15a66/5de717c807244372841e545b940f0c4d/FLAGfcd618ded [2020-10-14 03:23:11,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7f15a66/5de717c807244372841e545b940f0c4d [2020-10-14 03:23:11,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:23:11,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:23:11,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:23:11,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:23:11,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:23:11,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:23:11" (1/1) ... [2020-10-14 03:23:11,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53926226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:11, skipping insertion in model container [2020-10-14 03:23:11,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:23:11" (1/1) ... [2020-10-14 03:23:11,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:23:12,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:23:13,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:23:13,177 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:23:13,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:23:13,604 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:23:13,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13 WrapperNode [2020-10-14 03:23:13,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:23:13,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:23:13,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:23:13,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:23:13,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (1/1) ... [2020-10-14 03:23:13,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:23:13,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:23:13,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:23:13,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:23:13,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (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 [2020-10-14 03:23:13,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:23:13,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:23:13,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:23:13,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:23:13,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:23:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:23:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:23:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:23:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:23:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:23:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:23:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:23:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:23:19,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:23:19,796 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:23:19,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:23:19 BoogieIcfgContainer [2020-10-14 03:23:19,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:23:19,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:23:19,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:23:19,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:23:19,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:23:11" (1/3) ... [2020-10-14 03:23:19,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50761608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:23:19, skipping insertion in model container [2020-10-14 03:23:19,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:13" (2/3) ... [2020-10-14 03:23:19,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50761608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:23:19, skipping insertion in model container [2020-10-14 03:23:19,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:23:19" (3/3) ... [2020-10-14 03:23:19,814 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label01.c [2020-10-14 03:23:19,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:23:19,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:23:19,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:23:19,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:23:19,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:23:19,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:23:19,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:23:19,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:23:19,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:23:19,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:23:19,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:23:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:23:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 03:23:19,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:19,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:19,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:19,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2133968144, now seen corresponding path program 1 times [2020-10-14 03:23:19,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:19,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450530086] [2020-10-14 03:23:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:20,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:20,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 03:23:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-14 03:23:20,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:20,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:23:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:23:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:23:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:23:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:20,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:20,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:23:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:20,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:23:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:20,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450530086] [2020-10-14 03:23:20,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:23:20,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:23:20,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742241809] [2020-10-14 03:23:20,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:23:20,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:20,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:23:20,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:23:20,776 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:23:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:29,237 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:23:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:29,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 03:23:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:29,262 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:23:29,262 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:23:29,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:23:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:23:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:23:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:23:29,371 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 50 [2020-10-14 03:23:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:29,372 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:23:29,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:23:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:23:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 03:23:29,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:29,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:29,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:23:29,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:29,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1286493100, now seen corresponding path program 1 times [2020-10-14 03:23:29,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:29,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098303361] [2020-10-14 03:23:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:30,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:30,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:23:30,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 03:23:30,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:30,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:30,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:23:30,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:23:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:23:30,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:30,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:23:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:30,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:23:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:23:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 03:23:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:30,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:23:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:23:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 03:23:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:30,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098303361] [2020-10-14 03:23:30,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:23:30,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:23:30,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532044110] [2020-10-14 03:23:30,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:23:30,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:30,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:23:30,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:23:30,589 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 03:23:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:40,123 INFO L93 Difference]: Finished difference Result 1710 states and 2417 transitions. [2020-10-14 03:23:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:23:40,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-14 03:23:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:40,129 INFO L225 Difference]: With dead ends: 1710 [2020-10-14 03:23:40,129 INFO L226 Difference]: Without dead ends: 1025 [2020-10-14 03:23:40,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:23:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-14 03:23:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1014. [2020-10-14 03:23:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-14 03:23:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1367 transitions. [2020-10-14 03:23:40,183 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1367 transitions. Word has length 119 [2020-10-14 03:23:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:40,184 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1367 transitions. [2020-10-14 03:23:40,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:23:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1367 transitions. [2020-10-14 03:23:40,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 03:23:40,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:40,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:40,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:23:40,188 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:40,188 INFO L82 PathProgramCache]: Analyzing trace with hash -47160281, now seen corresponding path program 1 times [2020-10-14 03:23:40,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:40,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009770414] [2020-10-14 03:23:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:41,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:41,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 03:23:41,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:23:41,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 03:23:41,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:41,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:23:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:23:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:41,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:41,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:23:41,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:41,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:41,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:41,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:41,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:23:41,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:41,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 03:23:41,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:41,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:23:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:41,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009770414] [2020-10-14 03:23:41,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:41,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:41,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36555949] [2020-10-14 03:23:41,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:41,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:41,484 INFO L87 Difference]: Start difference. First operand 1014 states and 1367 transitions. Second operand 5 states. [2020-10-14 03:23:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:50,648 INFO L93 Difference]: Finished difference Result 2356 states and 3366 transitions. [2020-10-14 03:23:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:50,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 03:23:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:50,659 INFO L225 Difference]: With dead ends: 2356 [2020-10-14 03:23:50,660 INFO L226 Difference]: Without dead ends: 1656 [2020-10-14 03:23:50,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:23:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-10-14 03:23:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1642. [2020-10-14 03:23:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2020-10-14 03:23:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2149 transitions. [2020-10-14 03:23:50,711 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2149 transitions. Word has length 124 [2020-10-14 03:23:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:50,711 INFO L479 AbstractCegarLoop]: Abstraction has 1642 states and 2149 transitions. [2020-10-14 03:23:50,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:23:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2149 transitions. [2020-10-14 03:23:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 03:23:50,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:50,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:50,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:23:50,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:50,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1647981659, now seen corresponding path program 1 times [2020-10-14 03:23:50,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:50,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21838813] [2020-10-14 03:23:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:51,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:51,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 03:23:51,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:23:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-14 03:23:51,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:51,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:23:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:23:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:51,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:51,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:51,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:51,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:23:51,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:51,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:52,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:52,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:23:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 03:23:52,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:52,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:23:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:52,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21838813] [2020-10-14 03:23:52,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:52,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:52,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900873253] [2020-10-14 03:23:52,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:52,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:52,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:52,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:52,222 INFO L87 Difference]: Start difference. First operand 1642 states and 2149 transitions. Second operand 5 states. [2020-10-14 03:24:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:00,797 INFO L93 Difference]: Finished difference Result 3607 states and 4916 transitions. [2020-10-14 03:24:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:00,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 03:24:00,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:00,810 INFO L225 Difference]: With dead ends: 3607 [2020-10-14 03:24:00,810 INFO L226 Difference]: Without dead ends: 2278 [2020-10-14 03:24:00,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2020-10-14 03:24:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2276. [2020-10-14 03:24:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-14 03:24:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2848 transitions. [2020-10-14 03:24:00,873 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2848 transitions. Word has length 130 [2020-10-14 03:24:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:00,873 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 2848 transitions. [2020-10-14 03:24:00,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2848 transitions. [2020-10-14 03:24:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 03:24:00,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:00,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:00,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:24:00,877 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1499538287, now seen corresponding path program 1 times [2020-10-14 03:24:00,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:00,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161059651] [2020-10-14 03:24:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:01,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:01,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 03:24:01,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-14 03:24:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:01,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:24:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 03:24:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:01,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:01,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:01,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:02,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:24:02,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:24:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:02,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:24:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:02,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161059651] [2020-10-14 03:24:02,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:02,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:02,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273820501] [2020-10-14 03:24:02,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:02,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:02,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:02,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:02,138 INFO L87 Difference]: Start difference. First operand 2276 states and 2848 transitions. Second operand 5 states. [2020-10-14 03:24:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:11,249 INFO L93 Difference]: Finished difference Result 5186 states and 6789 transitions. [2020-10-14 03:24:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:11,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-14 03:24:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:11,266 INFO L225 Difference]: With dead ends: 5186 [2020-10-14 03:24:11,266 INFO L226 Difference]: Without dead ends: 3223 [2020-10-14 03:24:11,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2020-10-14 03:24:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3218. [2020-10-14 03:24:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2020-10-14 03:24:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 4105 transitions. [2020-10-14 03:24:11,352 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 4105 transitions. Word has length 136 [2020-10-14 03:24:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:11,352 INFO L479 AbstractCegarLoop]: Abstraction has 3218 states and 4105 transitions. [2020-10-14 03:24:11,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 4105 transitions. [2020-10-14 03:24:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 03:24:11,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:11,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:11,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:24:11,356 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:11,356 INFO L82 PathProgramCache]: Analyzing trace with hash -915350638, now seen corresponding path program 1 times [2020-10-14 03:24:11,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:11,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885069929] [2020-10-14 03:24:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:24:11,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 03:24:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:11,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:24:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:24:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:11,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:11,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:11,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:11,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:11,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:24:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:11,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:24:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:12,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885069929] [2020-10-14 03:24:12,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:12,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:12,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384356527] [2020-10-14 03:24:12,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:12,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:12,003 INFO L87 Difference]: Start difference. First operand 3218 states and 4105 transitions. Second operand 5 states. [2020-10-14 03:24:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:21,074 INFO L93 Difference]: Finished difference Result 6768 states and 8815 transitions. [2020-10-14 03:24:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:21,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 03:24:21,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:21,094 INFO L225 Difference]: With dead ends: 6768 [2020-10-14 03:24:21,094 INFO L226 Difference]: Without dead ends: 3863 [2020-10-14 03:24:21,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-10-14 03:24:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3841. [2020-10-14 03:24:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2020-10-14 03:24:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4880 transitions. [2020-10-14 03:24:21,192 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4880 transitions. Word has length 145 [2020-10-14 03:24:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:21,193 INFO L479 AbstractCegarLoop]: Abstraction has 3841 states and 4880 transitions. [2020-10-14 03:24:21,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4880 transitions. [2020-10-14 03:24:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 03:24:21,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:21,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:21,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:24:21,196 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:21,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1528256771, now seen corresponding path program 1 times [2020-10-14 03:24:21,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:21,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264468953] [2020-10-14 03:24:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 03:24:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-14 03:24:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:22,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:24:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:24:22,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:22,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:22,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:22,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:22,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:22,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:22,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:22,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:22,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:22,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:22,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:24:22,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 03:24:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:22,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:24:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:22,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264468953] [2020-10-14 03:24:22,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:22,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:24:22,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009068231] [2020-10-14 03:24:22,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:24:22,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:22,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:24:22,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:22,514 INFO L87 Difference]: Start difference. First operand 3841 states and 4880 transitions. Second operand 6 states. [2020-10-14 03:24:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:32,077 INFO L93 Difference]: Finished difference Result 8617 states and 11322 transitions. [2020-10-14 03:24:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:32,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-10-14 03:24:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:32,102 INFO L225 Difference]: With dead ends: 8617 [2020-10-14 03:24:32,102 INFO L226 Difference]: Without dead ends: 5089 [2020-10-14 03:24:32,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2020-10-14 03:24:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5084. [2020-10-14 03:24:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2020-10-14 03:24:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6669 transitions. [2020-10-14 03:24:32,266 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6669 transitions. Word has length 149 [2020-10-14 03:24:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:32,267 INFO L479 AbstractCegarLoop]: Abstraction has 5084 states and 6669 transitions. [2020-10-14 03:24:32,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:24:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6669 transitions. [2020-10-14 03:24:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 03:24:32,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:32,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:32,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:24:32,270 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1389199931, now seen corresponding path program 1 times [2020-10-14 03:24:32,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:32,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924594343] [2020-10-14 03:24:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:33,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:33,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:24:33,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-10-14 03:24:33,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:33,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:24:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:24:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:33,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:33,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:33,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:33,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:33,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:33,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:33,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:24:33,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:24:33,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:33,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 03:24:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:33,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924594343] [2020-10-14 03:24:33,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:33,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:33,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051000536] [2020-10-14 03:24:33,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:33,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:33,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:33,439 INFO L87 Difference]: Start difference. First operand 5084 states and 6669 transitions. Second operand 5 states. [2020-10-14 03:24:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:43,934 INFO L93 Difference]: Finished difference Result 11115 states and 14827 transitions. [2020-10-14 03:24:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:43,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 03:24:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:43,962 INFO L225 Difference]: With dead ends: 11115 [2020-10-14 03:24:43,962 INFO L226 Difference]: Without dead ends: 6344 [2020-10-14 03:24:43,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2020-10-14 03:24:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 6328. [2020-10-14 03:24:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6328 states. [2020-10-14 03:24:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 8217 transitions. [2020-10-14 03:24:44,130 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 8217 transitions. Word has length 153 [2020-10-14 03:24:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:44,131 INFO L479 AbstractCegarLoop]: Abstraction has 6328 states and 8217 transitions. [2020-10-14 03:24:44,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 8217 transitions. [2020-10-14 03:24:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 03:24:44,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:44,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:44,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:24:44,134 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1393800333, now seen corresponding path program 1 times [2020-10-14 03:24:44,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:44,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679207311] [2020-10-14 03:24:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 03:24:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 03:24:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:44,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:24:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:24:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 03:24:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:44,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:44,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:24:44,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:44,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:44,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:44,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:24:44,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:44,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 03:24:44,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:44,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:44,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:24:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:44,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679207311] [2020-10-14 03:24:44,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:44,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:24:44,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011757153] [2020-10-14 03:24:44,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:44,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:44,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:44,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:44,945 INFO L87 Difference]: Start difference. First operand 6328 states and 8217 transitions. Second operand 7 states. [2020-10-14 03:24:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:54,594 INFO L93 Difference]: Finished difference Result 12588 states and 17731 transitions. [2020-10-14 03:24:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:24:54,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-14 03:24:54,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:54,652 INFO L225 Difference]: With dead ends: 12588 [2020-10-14 03:24:54,653 INFO L226 Difference]: Without dead ends: 6573 [2020-10-14 03:24:54,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:24:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6573 states. [2020-10-14 03:24:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6573 to 6386. [2020-10-14 03:24:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6386 states. [2020-10-14 03:24:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 8396 transitions. [2020-10-14 03:24:54,929 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 8396 transitions. Word has length 157 [2020-10-14 03:24:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:54,930 INFO L479 AbstractCegarLoop]: Abstraction has 6386 states and 8396 transitions. [2020-10-14 03:24:54,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:24:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 8396 transitions. [2020-10-14 03:24:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 03:24:54,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:54,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:54,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:24:54,936 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1699649774, now seen corresponding path program 1 times [2020-10-14 03:24:54,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:54,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454423797] [2020-10-14 03:24:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:56,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:24:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-14 03:24:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:56,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:24:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:24:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:56,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:56,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:56,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:56,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:56,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:56,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:24:56,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:56,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:24:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:56,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:24:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:56,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:56,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:24:56,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:24:56,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:56,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:24:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:56,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454423797] [2020-10-14 03:24:56,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:56,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:56,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332886480] [2020-10-14 03:24:56,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:56,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:56,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:56,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:56,965 INFO L87 Difference]: Start difference. First operand 6386 states and 8396 transitions. Second operand 7 states. [2020-10-14 03:25:04,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:04,185 INFO L93 Difference]: Finished difference Result 12524 states and 17073 transitions. [2020-10-14 03:25:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:04,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-14 03:25:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:04,207 INFO L225 Difference]: With dead ends: 12524 [2020-10-14 03:25:04,207 INFO L226 Difference]: Without dead ends: 6451 [2020-10-14 03:25:04,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2020-10-14 03:25:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6105. [2020-10-14 03:25:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6105 states. [2020-10-14 03:25:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 7747 transitions. [2020-10-14 03:25:04,354 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 7747 transitions. Word has length 214 [2020-10-14 03:25:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:04,354 INFO L479 AbstractCegarLoop]: Abstraction has 6105 states and 7747 transitions. [2020-10-14 03:25:04,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 7747 transitions. [2020-10-14 03:25:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 03:25:04,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:04,359 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:04,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:25:04,359 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:04,360 INFO L82 PathProgramCache]: Analyzing trace with hash 640510897, now seen corresponding path program 1 times [2020-10-14 03:25:04,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:04,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208281476] [2020-10-14 03:25:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 03:25:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:25:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2074 [2020-10-14 03:25:06,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:25:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:25:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:06,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:06,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:25:06,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:25:06,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:25:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:25:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:25:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 03:25:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:25:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:07,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208281476] [2020-10-14 03:25:07,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:07,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:07,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269790881] [2020-10-14 03:25:07,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:07,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:07,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:07,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:07,068 INFO L87 Difference]: Start difference. First operand 6105 states and 7747 transitions. Second operand 7 states. [2020-10-14 03:25:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:18,020 INFO L93 Difference]: Finished difference Result 15117 states and 19700 transitions. [2020-10-14 03:25:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:25:18,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-14 03:25:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:18,051 INFO L225 Difference]: With dead ends: 15117 [2020-10-14 03:25:18,051 INFO L226 Difference]: Without dead ends: 9325 [2020-10-14 03:25:18,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:18,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9325 states. [2020-10-14 03:25:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9325 to 7747. [2020-10-14 03:25:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7747 states. [2020-10-14 03:25:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7747 states to 7747 states and 9760 transitions. [2020-10-14 03:25:18,284 INFO L78 Accepts]: Start accepts. Automaton has 7747 states and 9760 transitions. Word has length 215 [2020-10-14 03:25:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:18,285 INFO L479 AbstractCegarLoop]: Abstraction has 7747 states and 9760 transitions. [2020-10-14 03:25:18,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 7747 states and 9760 transitions. [2020-10-14 03:25:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 03:25:18,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:18,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:18,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:25:18,292 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:18,293 INFO L82 PathProgramCache]: Analyzing trace with hash 76049901, now seen corresponding path program 1 times [2020-10-14 03:25:18,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:18,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605870792] [2020-10-14 03:25:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:22,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:22,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 03:25:22,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:25:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3835 [2020-10-14 03:25:22,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:22,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:25:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:25:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:22,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:22,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:22,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:25:22,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:22,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:22,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:22,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:25:22,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:25:22,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:22,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:25:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:25:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:22,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:25:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 03:25:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:22,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:25:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:22,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605870792] [2020-10-14 03:25:22,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:22,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:22,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142419964] [2020-10-14 03:25:22,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:22,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:22,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:22,940 INFO L87 Difference]: Start difference. First operand 7747 states and 9760 transitions. Second operand 7 states. [2020-10-14 03:25:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:34,554 INFO L93 Difference]: Finished difference Result 16525 states and 21602 transitions. [2020-10-14 03:25:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:34,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-14 03:25:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:34,593 INFO L225 Difference]: With dead ends: 16525 [2020-10-14 03:25:34,593 INFO L226 Difference]: Without dead ends: 7494 [2020-10-14 03:25:34,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7494 states. [2020-10-14 03:25:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7494 to 7394. [2020-10-14 03:25:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7394 states. [2020-10-14 03:25:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7394 states to 7394 states and 8796 transitions. [2020-10-14 03:25:34,880 INFO L78 Accepts]: Start accepts. Automaton has 7394 states and 8796 transitions. Word has length 217 [2020-10-14 03:25:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:34,880 INFO L479 AbstractCegarLoop]: Abstraction has 7394 states and 8796 transitions. [2020-10-14 03:25:34,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 7394 states and 8796 transitions. [2020-10-14 03:25:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 03:25:34,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:34,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:34,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:25:34,885 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:34,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:34,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1275424955, now seen corresponding path program 1 times [2020-10-14 03:25:34,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:34,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310730302] [2020-10-14 03:25:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:35,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:25:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-14 03:25:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:35,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 03:25:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:25:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:35,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:35,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:35,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:25:35,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:35,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:35,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:35,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:35,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:35,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 03:25:35,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 03:25:35,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:35,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 03:25:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:25:36,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310730302] [2020-10-14 03:25:36,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:36,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:25:36,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483758511] [2020-10-14 03:25:36,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:25:36,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:36,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:25:36,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:25:36,152 INFO L87 Difference]: Start difference. First operand 7394 states and 8796 transitions. Second operand 5 states. [2020-10-14 03:25:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:47,120 INFO L93 Difference]: Finished difference Result 15424 states and 18336 transitions. [2020-10-14 03:25:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:25:47,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-14 03:25:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:47,145 INFO L225 Difference]: With dead ends: 15424 [2020-10-14 03:25:47,145 INFO L226 Difference]: Without dead ends: 8024 [2020-10-14 03:25:47,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:25:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2020-10-14 03:25:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7398. [2020-10-14 03:25:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7398 states. [2020-10-14 03:25:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 8738 transitions. [2020-10-14 03:25:47,299 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 8738 transitions. Word has length 230 [2020-10-14 03:25:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:47,299 INFO L479 AbstractCegarLoop]: Abstraction has 7398 states and 8738 transitions. [2020-10-14 03:25:47,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:25:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 8738 transitions. [2020-10-14 03:25:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 03:25:47,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:47,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:47,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:25:47,304 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash 542134309, now seen corresponding path program 1 times [2020-10-14 03:25:47,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:47,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378489625] [2020-10-14 03:25:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 03:25:48,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-10-14 03:25:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:48,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:25:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:25:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:48,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:48,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:48,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:49,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:49,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:25:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 03:25:49,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:49,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:25:49,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:25:49,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378489625] [2020-10-14 03:25:49,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:49,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:25:49,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372549060] [2020-10-14 03:25:49,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:25:49,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:49,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:25:49,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:25:49,268 INFO L87 Difference]: Start difference. First operand 7398 states and 8738 transitions. Second operand 5 states. [2020-10-14 03:26:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:02,939 INFO L93 Difference]: Finished difference Result 17940 states and 21339 transitions. [2020-10-14 03:26:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:26:02,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-14 03:26:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:02,971 INFO L225 Difference]: With dead ends: 17940 [2020-10-14 03:26:02,972 INFO L226 Difference]: Without dead ends: 10528 [2020-10-14 03:26:02,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:26:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2020-10-14 03:26:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 10206. [2020-10-14 03:26:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10206 states. [2020-10-14 03:26:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10206 states to 10206 states and 11757 transitions. [2020-10-14 03:26:03,222 INFO L78 Accepts]: Start accepts. Automaton has 10206 states and 11757 transitions. Word has length 287 [2020-10-14 03:26:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:03,223 INFO L479 AbstractCegarLoop]: Abstraction has 10206 states and 11757 transitions. [2020-10-14 03:26:03,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:26:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10206 states and 11757 transitions. [2020-10-14 03:26:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-14 03:26:03,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:03,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:03,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:26:03,241 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:03,242 INFO L82 PathProgramCache]: Analyzing trace with hash 468674489, now seen corresponding path program 1 times [2020-10-14 03:26:03,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:03,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96563309] [2020-10-14 03:26:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:05,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 03:26:05,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:26:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2074 [2020-10-14 03:26:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:26:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:26:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 03:26:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:05,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:05,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:05,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:05,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:06,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:26:06,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-14 03:26:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:06,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:26:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:06,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:26:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:26:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:26:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:06,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:26:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:26:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:06,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96563309] [2020-10-14 03:26:06,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:06,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:26:06,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195534788] [2020-10-14 03:26:06,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:26:06,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:06,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:26:06,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:26:06,779 INFO L87 Difference]: Start difference. First operand 10206 states and 11757 transitions. Second operand 8 states. [2020-10-14 03:26:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:29,722 INFO L93 Difference]: Finished difference Result 28342 states and 33680 transitions. [2020-10-14 03:26:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:26:29,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 405 [2020-10-14 03:26:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:29,794 INFO L225 Difference]: With dead ends: 28342 [2020-10-14 03:26:29,794 INFO L226 Difference]: Without dead ends: 18119 [2020-10-14 03:26:29,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:26:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18119 states. [2020-10-14 03:26:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18119 to 16791. [2020-10-14 03:26:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-14 03:26:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 19695 transitions. [2020-10-14 03:26:30,188 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 19695 transitions. Word has length 405 [2020-10-14 03:26:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:30,189 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 19695 transitions. [2020-10-14 03:26:30,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:26:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 19695 transitions. [2020-10-14 03:26:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-14 03:26:30,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:30,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:30,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:26:30,203 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash -236872076, now seen corresponding path program 1 times [2020-10-14 03:26:30,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:30,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96111345] [2020-10-14 03:26:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:33,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:33,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-14 03:26:33,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-10-14 03:26:33,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:33,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:26:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:33,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:33,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:26:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:33,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:33,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:33,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:26:33,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 03:26:33,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:33,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:26:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:26:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:33,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:33,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:26:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:26:33,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:33,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:26:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:34,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96111345] [2020-10-14 03:26:34,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:34,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:26:34,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57298804] [2020-10-14 03:26:34,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:26:34,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:34,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:26:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:26:34,034 INFO L87 Difference]: Start difference. First operand 16791 states and 19695 transitions. Second operand 8 states. [2020-10-14 03:26:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:50,458 INFO L93 Difference]: Finished difference Result 36088 states and 42879 transitions. [2020-10-14 03:26:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:26:50,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 445 [2020-10-14 03:26:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:50,526 INFO L225 Difference]: With dead ends: 36088 [2020-10-14 03:26:50,527 INFO L226 Difference]: Without dead ends: 19610 [2020-10-14 03:26:50,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:26:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19610 states. [2020-10-14 03:26:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19610 to 18364. [2020-10-14 03:26:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18364 states. [2020-10-14 03:26:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18364 states to 18364 states and 21046 transitions. [2020-10-14 03:26:50,907 INFO L78 Accepts]: Start accepts. Automaton has 18364 states and 21046 transitions. Word has length 445 [2020-10-14 03:26:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:50,908 INFO L479 AbstractCegarLoop]: Abstraction has 18364 states and 21046 transitions. [2020-10-14 03:26:50,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:26:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 18364 states and 21046 transitions. [2020-10-14 03:26:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 03:26:50,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:50,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:50,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:26:50,917 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1632854708, now seen corresponding path program 1 times [2020-10-14 03:26:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:50,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512677199] [2020-10-14 03:26:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:52,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:54,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 03:26:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3775 [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:26:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:54,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:54,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:54,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:54,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:26:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:26:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:26:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 03:26:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 241 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 03:26:55,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512677199] [2020-10-14 03:26:55,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:55,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:55,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495668001] [2020-10-14 03:26:55,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:55,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:55,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:55,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:55,967 INFO L87 Difference]: Start difference. First operand 18364 states and 21046 transitions. Second operand 7 states.