/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/Problem17_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:06:07,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:06:07,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:06:07,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:06:07,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:06:07,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:06:07,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:06:07,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:06:07,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:06:07,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:06:07,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:06:07,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:06:07,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:06:07,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:06:07,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:06:07,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:06:07,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:06:07,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:06:07,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:06:07,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:06:07,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:06:07,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:06:07,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:06:07,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:06:07,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:06:07,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:06:07,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:06:07,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:06:07,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:06:07,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:06:07,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:06:07,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:06:07,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:06:07,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:06:07,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:06:07,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:06:07,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:06:07,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:06:07,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:06:07,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:06:07,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:06:07,656 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 04:06:07,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:06:07,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:06:07,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:06:07,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:06:07,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:06:07,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:06:07,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:06:07,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:06:07,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:06:07,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:06:07,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:06:07,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:06:07,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:06:07,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:06:07,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:06:07,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:06:07,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:06:07,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:06:07,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:06:07,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:06:07,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:06:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:06:07,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:06:07,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:06:07,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:06:07,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:06:07,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:06:07,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:06:07,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:06:07,711 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 04:06:08,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:06:08,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:06:08,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:06:08,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:06:08,025 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:06:08,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2020-10-14 04:06:08,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12af8469d/438dbc28b5244403aa6d296e71c18fe9/FLAG5f69fcc70 [2020-10-14 04:06:08,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:06:08,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2020-10-14 04:06:08,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12af8469d/438dbc28b5244403aa6d296e71c18fe9/FLAG5f69fcc70 [2020-10-14 04:06:08,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12af8469d/438dbc28b5244403aa6d296e71c18fe9 [2020-10-14 04:06:08,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:06:08,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:06:08,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:06:08,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:06:08,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:06:08,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:06:08" (1/1) ... [2020-10-14 04:06:08,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1d4b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:08, skipping insertion in model container [2020-10-14 04:06:08,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:06:08" (1/1) ... [2020-10-14 04:06:08,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:06:09,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:06:10,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:06:10,188 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:06:10,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:06:10,671 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:06:10,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10 WrapperNode [2020-10-14 04:06:10,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:06:10,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:06:10,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:06:10,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:06:10,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (1/1) ... [2020-10-14 04:06:10,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:06:10,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:06:10,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:06:10,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:06:10,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (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 04:06:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:06:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:06:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:06:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:06:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:06:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:06:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:06:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:06:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:06:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:06:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:06:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:06:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:06:17,702 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:06:17,702 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:06:17,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:06:17 BoogieIcfgContainer [2020-10-14 04:06:17,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:06:17,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:06:17,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:06:17,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:06:17,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:06:08" (1/3) ... [2020-10-14 04:06:17,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751c12ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:06:17, skipping insertion in model container [2020-10-14 04:06:17,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:10" (2/3) ... [2020-10-14 04:06:17,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751c12ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:06:17, skipping insertion in model container [2020-10-14 04:06:17,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:06:17" (3/3) ... [2020-10-14 04:06:17,726 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2020-10-14 04:06:17,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:06:17,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:06:17,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:06:17,827 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:06:17,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:06:17,828 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:06:17,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:06:17,828 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:06:17,828 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:06:17,828 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:06:17,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:06:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:06:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:06:17,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:17,887 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 04:06:17,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1011667849, now seen corresponding path program 1 times [2020-10-14 04:06:17,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:17,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864494364] [2020-10-14 04:06:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:18,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:06:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 04:06:18,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:18,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:06:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:06:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 04:06:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:06:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:18,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:18,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:18,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:06:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:18,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:06:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:18,756 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 04:06:18,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864494364] [2020-10-14 04:06:18,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:06:18,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:06:18,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587054139] [2020-10-14 04:06:18,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:06:18,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:18,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:06:18,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:06:18,786 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:06:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:32,842 INFO L93 Difference]: Finished difference Result 1729 states and 3137 transitions. [2020-10-14 04:06:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:32,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 04:06:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:32,872 INFO L225 Difference]: With dead ends: 1729 [2020-10-14 04:06:32,873 INFO L226 Difference]: Without dead ends: 1047 [2020-10-14 04:06:32,886 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 04:06:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-10-14 04:06:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1028. [2020-10-14 04:06:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2020-10-14 04:06:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1763 transitions. [2020-10-14 04:06:33,019 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1763 transitions. Word has length 50 [2020-10-14 04:06:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:33,020 INFO L479 AbstractCegarLoop]: Abstraction has 1028 states and 1763 transitions. [2020-10-14 04:06:33,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:06:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1763 transitions. [2020-10-14 04:06:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 04:06:33,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:33,027 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 04:06:33,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:06:33,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash -595107304, now seen corresponding path program 1 times [2020-10-14 04:06:33,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:33,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953620647] [2020-10-14 04:06:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:34,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:34,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 04:06:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:06:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-14 04:06:34,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:34,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:06:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 04:06:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:06:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:34,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:34,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:34,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:06:34,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 04:06:34,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:34,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:06:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:06:34,709 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 04:06:34,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953620647] [2020-10-14 04:06:34,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:34,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:34,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713274407] [2020-10-14 04:06:34,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:34,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:34,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:34,715 INFO L87 Difference]: Start difference. First operand 1028 states and 1763 transitions. Second operand 5 states. [2020-10-14 04:06:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:49,279 INFO L93 Difference]: Finished difference Result 2944 states and 5134 transitions. [2020-10-14 04:06:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:49,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 04:06:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:49,293 INFO L225 Difference]: With dead ends: 2944 [2020-10-14 04:06:49,293 INFO L226 Difference]: Without dead ends: 1922 [2020-10-14 04:06:49,297 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 04:06:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2020-10-14 04:06:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1914. [2020-10-14 04:06:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2020-10-14 04:06:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 3039 transitions. [2020-10-14 04:06:49,355 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 3039 transitions. Word has length 119 [2020-10-14 04:06:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:49,356 INFO L479 AbstractCegarLoop]: Abstraction has 1914 states and 3039 transitions. [2020-10-14 04:06:49,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 3039 transitions. [2020-10-14 04:06:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 04:06:49,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:49,360 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] [2020-10-14 04:06:49,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:06:49,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:49,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:49,361 INFO L82 PathProgramCache]: Analyzing trace with hash -52364396, now seen corresponding path program 1 times [2020-10-14 04:06:49,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:49,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926596358] [2020-10-14 04:06:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:49,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:50,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:06:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-14 04:06:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:50,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:06:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 04:06:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:50,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:50,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:50,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:06:50,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:50,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:50,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:50,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:06:50,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:50,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:06:50,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:50,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:06:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:50,370 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 04:06:50,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926596358] [2020-10-14 04:06:50,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:50,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:50,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245981814] [2020-10-14 04:06:50,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:50,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:50,375 INFO L87 Difference]: Start difference. First operand 1914 states and 3039 transitions. Second operand 5 states. [2020-10-14 04:07:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:10,709 INFO L93 Difference]: Finished difference Result 5584 states and 9020 transitions. [2020-10-14 04:07:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:10,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 04:07:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:10,736 INFO L225 Difference]: With dead ends: 5584 [2020-10-14 04:07:10,736 INFO L226 Difference]: Without dead ends: 3676 [2020-10-14 04:07:10,742 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 04:07:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-10-14 04:07:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3668. [2020-10-14 04:07:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3668 states. [2020-10-14 04:07:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5183 transitions. [2020-10-14 04:07:10,858 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5183 transitions. Word has length 121 [2020-10-14 04:07:10,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:10,860 INFO L479 AbstractCegarLoop]: Abstraction has 3668 states and 5183 transitions. [2020-10-14 04:07:10,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5183 transitions. [2020-10-14 04:07:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 04:07:10,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:10,873 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 04:07:10,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:07:10,873 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:10,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1782232224, now seen corresponding path program 1 times [2020-10-14 04:07:10,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:10,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260123890] [2020-10-14 04:07:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:10,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:12,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 04:07:12,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:07:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-14 04:07:12,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:12,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:07:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:07:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 04:07:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:07:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:12,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:12,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:07:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:12,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:07:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:07:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:12,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:12,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:12,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:07:12,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 04:07:12,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:12,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:07:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:07:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:07:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:07:12,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260123890] [2020-10-14 04:07:12,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:12,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:07:12,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120419488] [2020-10-14 04:07:12,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:07:12,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:12,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:07:12,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:07:12,523 INFO L87 Difference]: Start difference. First operand 3668 states and 5183 transitions. Second operand 8 states. [2020-10-14 04:07:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:27,169 INFO L93 Difference]: Finished difference Result 12768 states and 18783 transitions. [2020-10-14 04:07:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:07:27,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-14 04:07:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:27,218 INFO L225 Difference]: With dead ends: 12768 [2020-10-14 04:07:27,218 INFO L226 Difference]: Without dead ends: 9106 [2020-10-14 04:07:27,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:07:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9106 states. [2020-10-14 04:07:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9106 to 7344. [2020-10-14 04:07:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7344 states. [2020-10-14 04:07:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7344 states to 7344 states and 9709 transitions. [2020-10-14 04:07:27,454 INFO L78 Accepts]: Start accepts. Automaton has 7344 states and 9709 transitions. Word has length 124 [2020-10-14 04:07:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:27,455 INFO L479 AbstractCegarLoop]: Abstraction has 7344 states and 9709 transitions. [2020-10-14 04:07:27,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:07:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7344 states and 9709 transitions. [2020-10-14 04:07:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 04:07:27,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:27,458 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] [2020-10-14 04:07:27,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:07:27,459 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1792835212, now seen corresponding path program 1 times [2020-10-14 04:07:27,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:27,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848778041] [2020-10-14 04:07:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 04:07:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:07:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-14 04:07:29,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:29,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:07:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 04:07:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:07:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:07:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:29,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:29,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:07:29,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 04:07:29,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:29,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:07:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:07:29,289 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 04:07:29,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848778041] [2020-10-14 04:07:29,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:29,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:07:29,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401098981] [2020-10-14 04:07:29,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:07:29,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:29,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:07:29,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:07:29,293 INFO L87 Difference]: Start difference. First operand 7344 states and 9709 transitions. Second operand 5 states. [2020-10-14 04:07:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:47,241 INFO L93 Difference]: Finished difference Result 20033 states and 26845 transitions. [2020-10-14 04:07:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:47,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-14 04:07:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:47,309 INFO L225 Difference]: With dead ends: 20033 [2020-10-14 04:07:47,309 INFO L226 Difference]: Without dead ends: 12695 [2020-10-14 04:07:47,330 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 04:07:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12695 states. [2020-10-14 04:07:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12695 to 12639. [2020-10-14 04:07:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12639 states. [2020-10-14 04:07:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12639 states to 12639 states and 16897 transitions. [2020-10-14 04:07:47,799 INFO L78 Accepts]: Start accepts. Automaton has 12639 states and 16897 transitions. Word has length 125 [2020-10-14 04:07:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:47,800 INFO L479 AbstractCegarLoop]: Abstraction has 12639 states and 16897 transitions. [2020-10-14 04:07:47,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 12639 states and 16897 transitions. [2020-10-14 04:07:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 04:07:47,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:47,803 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] [2020-10-14 04:07:47,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:07:47,804 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash -334442646, now seen corresponding path program 1 times [2020-10-14 04:07:47,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:47,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971012668] [2020-10-14 04:07:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:52,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 04:07:52,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:07:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:07:52,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:52,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 04:07:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 04:07:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:07:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:52,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:52,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:07:52,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:52,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:52,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:53,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:53,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:07:53,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 04:07:53,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:53,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 04:07:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:53,259 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 04:07:53,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971012668] [2020-10-14 04:07:53,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:53,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:07:53,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897146882] [2020-10-14 04:07:53,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:07:53,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:53,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:07:53,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:07:53,264 INFO L87 Difference]: Start difference. First operand 12639 states and 16897 transitions. Second operand 5 states. [2020-10-14 04:08:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:05,956 INFO L93 Difference]: Finished difference Result 28385 states and 39401 transitions. [2020-10-14 04:08:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:05,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-14 04:08:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:06,015 INFO L225 Difference]: With dead ends: 28385 [2020-10-14 04:08:06,015 INFO L226 Difference]: Without dead ends: 17060 [2020-10-14 04:08:06,043 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 04:08:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17060 states. [2020-10-14 04:08:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17060 to 17050. [2020-10-14 04:08:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17050 states. [2020-10-14 04:08:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17050 states to 17050 states and 22685 transitions. [2020-10-14 04:08:06,396 INFO L78 Accepts]: Start accepts. Automaton has 17050 states and 22685 transitions. Word has length 160 [2020-10-14 04:08:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:06,396 INFO L479 AbstractCegarLoop]: Abstraction has 17050 states and 22685 transitions. [2020-10-14 04:08:06,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 17050 states and 22685 transitions. [2020-10-14 04:08:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 04:08:06,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:06,402 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] [2020-10-14 04:08:06,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:08:06,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:06,403 INFO L82 PathProgramCache]: Analyzing trace with hash 370535675, now seen corresponding path program 1 times [2020-10-14 04:08:06,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:06,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058651171] [2020-10-14 04:08:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:08,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 04:08:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:08:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-14 04:08:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:08,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 04:08:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 04:08:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:08,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:08,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:08,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:08:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:08,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:08,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:08:08,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 04:08:08,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:08,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 04:08:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:08,754 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 04:08:08,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058651171] [2020-10-14 04:08:08,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:08,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:08,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129092914] [2020-10-14 04:08:08,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:08,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:08,760 INFO L87 Difference]: Start difference. First operand 17050 states and 22685 transitions. Second operand 5 states. [2020-10-14 04:08:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:27,117 INFO L93 Difference]: Finished difference Result 34957 states and 48444 transitions. [2020-10-14 04:08:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:27,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 04:08:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:27,239 INFO L225 Difference]: With dead ends: 34957 [2020-10-14 04:08:27,239 INFO L226 Difference]: Without dead ends: 23209 [2020-10-14 04:08:27,285 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 04:08:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23209 states. [2020-10-14 04:08:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23209 to 20598. [2020-10-14 04:08:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20598 states. [2020-10-14 04:08:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20598 states to 20598 states and 27719 transitions. [2020-10-14 04:08:27,970 INFO L78 Accepts]: Start accepts. Automaton has 20598 states and 27719 transitions. Word has length 187 [2020-10-14 04:08:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:27,971 INFO L479 AbstractCegarLoop]: Abstraction has 20598 states and 27719 transitions. [2020-10-14 04:08:27,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 20598 states and 27719 transitions. [2020-10-14 04:08:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 04:08:27,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:27,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:27,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:08:27,979 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1789625263, now seen corresponding path program 1 times [2020-10-14 04:08:27,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:27,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921110530] [2020-10-14 04:08:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:33,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 04:08:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:08:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 04:08:33,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:33,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:08:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:08:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:33,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:08:33,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:33,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:33,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:33,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:08:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:08:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:33,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:08:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:08:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:33,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:33,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:08:33,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 04:08:33,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:33,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:08:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:08:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:08:33,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921110530] [2020-10-14 04:08:33,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:33,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:08:33,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524356047] [2020-10-14 04:08:33,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:08:33,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:33,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:08:33,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:08:33,562 INFO L87 Difference]: Start difference. First operand 20598 states and 27719 transitions. Second operand 7 states. [2020-10-14 04:08:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:48,520 INFO L93 Difference]: Finished difference Result 34710 states and 47739 transitions. [2020-10-14 04:08:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:08:48,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-14 04:08:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:48,561 INFO L225 Difference]: With dead ends: 34710 [2020-10-14 04:08:48,561 INFO L226 Difference]: Without dead ends: 11847 [2020-10-14 04:08:48,607 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 04:08:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2020-10-14 04:08:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 10928. [2020-10-14 04:08:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10928 states. [2020-10-14 04:08:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10928 states to 10928 states and 13207 transitions. [2020-10-14 04:08:48,834 INFO L78 Accepts]: Start accepts. Automaton has 10928 states and 13207 transitions. Word has length 201 [2020-10-14 04:08:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:48,835 INFO L479 AbstractCegarLoop]: Abstraction has 10928 states and 13207 transitions. [2020-10-14 04:08:48,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:08:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10928 states and 13207 transitions. [2020-10-14 04:08:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 04:08:48,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:48,844 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:48,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:08:48,845 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1318194181, now seen corresponding path program 1 times [2020-10-14 04:08:48,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:48,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921847085] [2020-10-14 04:08:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:49,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 04:08:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:08:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4299 [2020-10-14 04:08:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:08:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:08:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:53,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:08:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:08:53,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:08:53,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:53,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:08:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:08:53,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 04:08:53,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:08:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:53,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:08:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:08:53,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:08:53,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:08:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:08:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:08:53,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921847085] [2020-10-14 04:08:53,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:53,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:08:53,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827507490] [2020-10-14 04:08:53,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:08:53,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:53,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:08:53,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:08:53,782 INFO L87 Difference]: Start difference. First operand 10928 states and 13207 transitions. Second operand 7 states. [2020-10-14 04:09:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:09,778 INFO L93 Difference]: Finished difference Result 22296 states and 27056 transitions. [2020-10-14 04:09:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:09:09,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 04:09:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:09,817 INFO L225 Difference]: With dead ends: 22296 [2020-10-14 04:09:09,817 INFO L226 Difference]: Without dead ends: 11814 [2020-10-14 04:09:09,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 04:09:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2020-10-14 04:09:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 10936. [2020-10-14 04:09:10,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10936 states. [2020-10-14 04:09:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 13072 transitions. [2020-10-14 04:09:10,070 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 13072 transitions. Word has length 300 [2020-10-14 04:09:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:10,071 INFO L479 AbstractCegarLoop]: Abstraction has 10936 states and 13072 transitions. [2020-10-14 04:09:10,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 13072 transitions. [2020-10-14 04:09:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-14 04:09:10,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:10,083 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:09:10,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:09:10,084 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:10,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1484456413, now seen corresponding path program 1 times [2020-10-14 04:09:10,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:10,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685052931] [2020-10-14 04:09:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:15,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-14 04:09:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:09:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 04:09:15,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:15,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:09:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 04:09:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:15,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:09:15,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:15,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:15,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:15,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:09:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:15,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:09:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:09:15,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 04:09:15,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:15,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:09:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 04:09:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:15,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:15,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:09:15,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:09:15,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:15,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:09:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 217 proven. 85 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:09:16,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685052931] [2020-10-14 04:09:16,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:16,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:16,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213247849] [2020-10-14 04:09:16,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:16,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:16,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:16,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:16,058 INFO L87 Difference]: Start difference. First operand 10936 states and 13072 transitions. Second operand 7 states. [2020-10-14 04:09:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:44,122 INFO L93 Difference]: Finished difference Result 27889 states and 34016 transitions. [2020-10-14 04:09:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:09:44,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-14 04:09:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:44,169 INFO L225 Difference]: With dead ends: 27889 [2020-10-14 04:09:44,169 INFO L226 Difference]: Without dead ends: 16946 [2020-10-14 04:09:44,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:09:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16946 states. [2020-10-14 04:09:44,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16946 to 16865. [2020-10-14 04:09:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2020-10-14 04:09:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 19855 transitions. [2020-10-14 04:09:44,520 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 19855 transitions. Word has length 325 [2020-10-14 04:09:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:44,521 INFO L479 AbstractCegarLoop]: Abstraction has 16865 states and 19855 transitions. [2020-10-14 04:09:44,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 19855 transitions. [2020-10-14 04:09:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 04:09:44,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:44,530 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:09:44,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:09:44,530 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:44,531 INFO L82 PathProgramCache]: Analyzing trace with hash 589713806, now seen corresponding path program 1 times [2020-10-14 04:09:44,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:44,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256857131] [2020-10-14 04:09:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:49,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:49,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 04:09:49,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:09:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4825 [2020-10-14 04:09:49,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:49,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:09:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:09:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:49,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:49,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:49,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:49,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:49,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:09:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:49,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:49,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:09:49,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:09:49,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:09:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:09:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:09:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:49,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:09:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 217 proven. 85 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:09:50,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256857131] [2020-10-14 04:09:50,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:50,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:50,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289904452] [2020-10-14 04:09:50,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:50,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:50,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:50,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:50,077 INFO L87 Difference]: Start difference. First operand 16865 states and 19855 transitions. Second operand 7 states. [2020-10-14 04:09:54,810 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 41