/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:30:21,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:30:21,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:30:21,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:30:21,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:30:21,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:30:21,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:30:21,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:30:21,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:30:21,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:30:21,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:30:21,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:30:21,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:30:21,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:30:21,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:30:21,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:30:21,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:30:21,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:30:21,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:30:21,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:30:21,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:30:21,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:30:21,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:30:21,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:30:21,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:30:21,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:30:21,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:30:21,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:30:21,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:30:21,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:30:21,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:30:21,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:30:21,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:30:21,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:30:21,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:30:21,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:30:21,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:30:21,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:30:21,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:30:21,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:30:21,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:30:21,747 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 21:30:21,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:30:21,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:30:21,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:30:21,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:30:21,773 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:30:21,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:30:21,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:30:21,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:30:21,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:30:21,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:30:21,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:30:21,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:30:21,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:30:21,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:30:21,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:30:21,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:30:21,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:30:21,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:30:21,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:30:21,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:30:21,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:30:21,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:30:21,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:30:21,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:30:21,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:30:21,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:30:21,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:30:21,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:30:21,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:30:21,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:30:22,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:30:22,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:30:22,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:30:22,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:30:22,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:30:22,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34.c [2020-10-14 21:30:22,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6e5b3065/59e1f52e53d94f10a2428aaa2893cc50/FLAGec355833d [2020-10-14 21:30:23,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:30:23,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label34.c [2020-10-14 21:30:23,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6e5b3065/59e1f52e53d94f10a2428aaa2893cc50/FLAGec355833d [2020-10-14 21:30:23,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6e5b3065/59e1f52e53d94f10a2428aaa2893cc50 [2020-10-14 21:30:23,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:30:23,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:30:23,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:30:23,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:30:23,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:30:23,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:30:23" (1/1) ... [2020-10-14 21:30:23,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52da0f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:23, skipping insertion in model container [2020-10-14 21:30:23,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:30:23" (1/1) ... [2020-10-14 21:30:23,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:30:23,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:30:25,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:30:25,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:30:26,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:30:26,560 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:30:26,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26 WrapperNode [2020-10-14 21:30:26,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:30:26,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:30:26,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:30:26,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:30:26,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (1/1) ... [2020-10-14 21:30:26,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:30:26,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:30:26,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:30:26,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:30:26,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (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 21:30:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:30:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:30:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:30:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:30:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:30:27,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:30:27,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:30:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:30:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:30:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:30:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:30:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:30:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:30:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:30:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:30:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:30:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:30:38,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:30:38,390 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:30:38,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:30:38 BoogieIcfgContainer [2020-10-14 21:30:38,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:30:38,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:30:38,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:30:38,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:30:38,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:30:23" (1/3) ... [2020-10-14 21:30:38,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77186b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:30:38, skipping insertion in model container [2020-10-14 21:30:38,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:26" (2/3) ... [2020-10-14 21:30:38,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77186b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:30:38, skipping insertion in model container [2020-10-14 21:30:38,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:30:38" (3/3) ... [2020-10-14 21:30:38,422 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label34.c [2020-10-14 21:30:38,434 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:30:38,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:30:38,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:30:38,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:30:38,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:30:38,496 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:30:38,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:30:38,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:30:38,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:30:38,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:30:38,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:30:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:30:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 21:30:38,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:38,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:30:38,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash -93933433, now seen corresponding path program 1 times [2020-10-14 21:30:38,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:38,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636888256] [2020-10-14 21:30:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:39,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:39,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:30:39,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-14 21:30:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:39,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:30:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:30:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:30:39,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:39,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:39,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:39,462 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 21:30:39,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636888256] [2020-10-14 21:30:39,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:39,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:30:39,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841402399] [2020-10-14 21:30:39,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:30:39,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:39,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:30:39,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:30:39,492 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:30:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:55,702 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:30:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:30:55,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 21:30:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:55,758 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:30:55,758 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:30:55,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:30:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:30:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:30:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:30:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:30:55,981 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 62 [2020-10-14 21:30:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:55,985 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:30:55,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:30:55,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:30:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 21:30:56,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:56,008 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, 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] [2020-10-14 21:30:56,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:30:56,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:56,011 INFO L82 PathProgramCache]: Analyzing trace with hash -916615170, now seen corresponding path program 1 times [2020-10-14 21:30:56,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:56,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988626885] [2020-10-14 21:30:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:57,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 21:30:57,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:30:57,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-14 21:30:57,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:57,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:30:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 21:30:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:30:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:57,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:30:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:57,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:30:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:30:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:57,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:57,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:57,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:30:57,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:30:57,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:57,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:30:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:57,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988626885] [2020-10-14 21:30:57,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:30:57,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:30:57,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936375793] [2020-10-14 21:30:57,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:30:57,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:30:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:30:57,797 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-14 21:31:15,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:15,888 INFO L93 Difference]: Finished difference Result 5478 states and 9071 transitions. [2020-10-14 21:31:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:31:15,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 21:31:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:15,924 INFO L225 Difference]: With dead ends: 5478 [2020-10-14 21:31:15,924 INFO L226 Difference]: Without dead ends: 3599 [2020-10-14 21:31:15,932 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 21:31:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2020-10-14 21:31:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3577. [2020-10-14 21:31:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3577 states. [2020-10-14 21:31:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5529 transitions. [2020-10-14 21:31:16,087 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5529 transitions. Word has length 132 [2020-10-14 21:31:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:16,090 INFO L479 AbstractCegarLoop]: Abstraction has 3577 states and 5529 transitions. [2020-10-14 21:31:16,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:31:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5529 transitions. [2020-10-14 21:31:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 21:31:16,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:16,097 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, 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] [2020-10-14 21:31:16,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:31:16,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:16,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:16,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1340361663, now seen corresponding path program 1 times [2020-10-14 21:31:16,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:16,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300679281] [2020-10-14 21:31:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:17,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:31:17,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-14 21:31:17,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:17,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 21:31:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:18,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:18,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:18,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:31:18,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:18,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:18,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:18,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:31:18,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 21:31:18,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:18,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:31:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:18,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300679281] [2020-10-14 21:31:18,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:18,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:31:18,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387172470] [2020-10-14 21:31:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:18,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:18,567 INFO L87 Difference]: Start difference. First operand 3577 states and 5529 transitions. Second operand 7 states. [2020-10-14 21:31:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:42,619 INFO L93 Difference]: Finished difference Result 10720 states and 16783 transitions. [2020-10-14 21:31:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:31:42,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-14 21:31:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:42,669 INFO L225 Difference]: With dead ends: 10720 [2020-10-14 21:31:42,669 INFO L226 Difference]: Without dead ends: 7149 [2020-10-14 21:31:42,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:31:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7149 states. [2020-10-14 21:31:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7149 to 7069. [2020-10-14 21:31:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7069 states. [2020-10-14 21:31:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 10184 transitions. [2020-10-14 21:31:42,936 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 10184 transitions. Word has length 171 [2020-10-14 21:31:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:42,938 INFO L479 AbstractCegarLoop]: Abstraction has 7069 states and 10184 transitions. [2020-10-14 21:31:42,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 10184 transitions. [2020-10-14 21:31:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 21:31:42,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:42,942 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, 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] [2020-10-14 21:31:42,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:31:42,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1526861454, now seen corresponding path program 1 times [2020-10-14 21:31:42,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:42,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372141661] [2020-10-14 21:31:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 21:31:44,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1763 [2020-10-14 21:31:44,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:31:44,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:44,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:31:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:44,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 21:31:45,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 21:31:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:45,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:31:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:45,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372141661] [2020-10-14 21:31:45,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:45,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:31:45,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478959444] [2020-10-14 21:31:45,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:31:45,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:31:45,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:31:45,446 INFO L87 Difference]: Start difference. First operand 7069 states and 10184 transitions. Second operand 8 states. [2020-10-14 21:32:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:25,540 INFO L93 Difference]: Finished difference Result 18480 states and 28495 transitions. [2020-10-14 21:32:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:32:25,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-10-14 21:32:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:25,622 INFO L225 Difference]: With dead ends: 18480 [2020-10-14 21:32:25,623 INFO L226 Difference]: Without dead ends: 11417 [2020-10-14 21:32:25,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:32:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2020-10-14 21:32:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 11371. [2020-10-14 21:32:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11371 states. [2020-10-14 21:32:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11371 states to 11371 states and 15652 transitions. [2020-10-14 21:32:26,301 INFO L78 Accepts]: Start accepts. Automaton has 11371 states and 15652 transitions. Word has length 174 [2020-10-14 21:32:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:26,302 INFO L479 AbstractCegarLoop]: Abstraction has 11371 states and 15652 transitions. [2020-10-14 21:32:26,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:32:26,303 INFO L276 IsEmpty]: Start isEmpty. Operand 11371 states and 15652 transitions. [2020-10-14 21:32:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 21:32:26,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:26,311 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, 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, 1, 1, 1, 1, 1, 1, 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 21:32:26,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:32:26,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2138547361, now seen corresponding path program 1 times [2020-10-14 21:32:26,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:26,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218653161] [2020-10-14 21:32:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:31,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:31,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 21:32:31,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:32:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 21:32:31,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:31,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:32:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:32:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 21:32:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:32:31,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:31,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:31,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:31,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:32:31,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:31,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:32:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:32:31,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:31,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:31,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:32:31,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:32:31,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:31,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:32:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:32:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:32:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:32,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:32,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:32:32,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 21:32:32,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:32,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:32,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:32:32,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:32:32,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218653161] [2020-10-14 21:32:32,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:32,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:32:32,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339919137] [2020-10-14 21:32:32,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:32:32,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:32,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:32:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:32:32,288 INFO L87 Difference]: Start difference. First operand 11371 states and 15652 transitions. Second operand 5 states. [2020-10-14 21:32:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:54,891 INFO L93 Difference]: Finished difference Result 21012 states and 29466 transitions. [2020-10-14 21:32:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:32:54,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-14 21:32:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:54,943 INFO L225 Difference]: With dead ends: 21012 [2020-10-14 21:32:54,944 INFO L226 Difference]: Without dead ends: 10452 [2020-10-14 21:32:54,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:32:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2020-10-14 21:32:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 10432. [2020-10-14 21:32:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10432 states. [2020-10-14 21:32:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 13194 transitions. [2020-10-14 21:32:55,255 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 13194 transitions. Word has length 232 [2020-10-14 21:32:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:55,256 INFO L479 AbstractCegarLoop]: Abstraction has 10432 states and 13194 transitions. [2020-10-14 21:32:55,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:32:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 13194 transitions. [2020-10-14 21:32:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 21:32:55,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:55,263 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:55,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:32:55,263 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:55,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1103628403, now seen corresponding path program 1 times [2020-10-14 21:32:55,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:55,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047869607] [2020-10-14 21:32:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:00,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 21:33:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:33:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 21:33:00,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:33:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:33:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 21:33:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:00,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:00,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:00,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:00,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:33:00,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:00,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:33:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:00,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:00,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:33:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:33:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 21:33:00,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:00,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:33:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 21:33:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:33:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:33:01,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:01,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:33:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 21:33:01,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047869607] [2020-10-14 21:33:01,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:33:01,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:33:01,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737686552] [2020-10-14 21:33:01,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:33:01,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:01,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:33:01,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:33:01,146 INFO L87 Difference]: Start difference. First operand 10432 states and 13194 transitions. Second operand 7 states. [2020-10-14 21:33:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:33:36,340 INFO L93 Difference]: Finished difference Result 29083 states and 38775 transitions. [2020-10-14 21:33:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:33:36,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-14 21:33:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:33:36,423 INFO L225 Difference]: With dead ends: 29083 [2020-10-14 21:33:36,424 INFO L226 Difference]: Without dead ends: 19460 [2020-10-14 21:33:36,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:33:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19460 states. [2020-10-14 21:33:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19460 to 18381. [2020-10-14 21:33:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18381 states. [2020-10-14 21:33:36,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18381 states to 18381 states and 22961 transitions. [2020-10-14 21:33:36,930 INFO L78 Accepts]: Start accepts. Automaton has 18381 states and 22961 transitions. Word has length 251 [2020-10-14 21:33:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:33:36,931 INFO L479 AbstractCegarLoop]: Abstraction has 18381 states and 22961 transitions. [2020-10-14 21:33:36,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:33:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18381 states and 22961 transitions. [2020-10-14 21:33:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 21:33:36,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:33:36,940 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:36,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:33:36,941 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:33:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:33:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash -875533307, now seen corresponding path program 1 times [2020-10-14 21:33:36,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:33:36,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106918037] [2020-10-14 21:33:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:33:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:33:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:33:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 21:33:41,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:41,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:33:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:33:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 21:33:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:33:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:42,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:33:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:42,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:42,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:33:42,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:33:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 21:33:42,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:42,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:33:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:33:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 21:33:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:42,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:42,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:33:42,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:33:42,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:42,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:33:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:33:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 21:33:43,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106918037] [2020-10-14 21:33:43,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:33:43,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:33:43,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232042341] [2020-10-14 21:33:43,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:33:43,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:33:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:33:43,217 INFO L87 Difference]: Start difference. First operand 18381 states and 22961 transitions. Second operand 8 states.