/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/Problem05_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:42:09,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:42:09,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:42:09,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:42:09,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:42:09,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:42:09,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:42:09,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:42:09,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:42:09,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:42:09,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:42:09,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:42:09,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:42:09,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:42:09,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:42:09,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:42:09,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:42:09,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:42:09,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:42:09,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:42:09,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:42:09,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:42:09,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:42:09,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:42:09,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:42:09,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:42:09,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:42:09,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:42:09,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:42:09,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:42:09,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:42:09,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:42:09,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:42:09,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:42:09,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:42:09,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:42:09,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:42:09,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:42:09,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:42:09,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:42:09,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:42:09,722 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 19:42:09,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:42:09,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:42:09,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:42:09,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:42:09,746 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:42:09,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:42:09,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:42:09,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:42:09,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:42:09,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:42:09,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:42:09,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:42:09,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:42:09,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:42:09,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:42:09,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:42:09,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:42:09,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:42:09,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:42:09,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:42:09,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:42:09,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:42:09,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:42:09,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:42:09,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:42:09,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:42:09,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:42:09,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:42:09,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:42:09,751 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 19:42:10,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:42:10,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:42:10,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:42:10,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:42:10,097 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:42:10,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label31.c [2020-10-14 19:42:10,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a6ff1b15/7ee14d50c8b143d3adee57fde9c45401/FLAG3e72e69bb [2020-10-14 19:42:11,205 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:42:11,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label31.c [2020-10-14 19:42:11,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a6ff1b15/7ee14d50c8b143d3adee57fde9c45401/FLAG3e72e69bb [2020-10-14 19:42:11,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a6ff1b15/7ee14d50c8b143d3adee57fde9c45401 [2020-10-14 19:42:11,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:42:11,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:42:11,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:42:11,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:42:11,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:42:11,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:42:11" (1/1) ... [2020-10-14 19:42:11,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2970dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:11, skipping insertion in model container [2020-10-14 19:42:11,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:42:11" (1/1) ... [2020-10-14 19:42:11,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:42:11,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:42:14,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:42:14,590 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:42:15,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:42:15,758 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:42:15,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15 WrapperNode [2020-10-14 19:42:15,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:42:15,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:42:15,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:42:15,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:42:15,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:15,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:15,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:15,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:16,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:16,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:16,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (1/1) ... [2020-10-14 19:42:16,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:42:16,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:42:16,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:42:16,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:42:16,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (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 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:42:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:42:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 19:42:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 19:42:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 19:42:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:42:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:42:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:42:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:42:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:42:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:42:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 19:42:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 19:42:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 19:42:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:42:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:42:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:42:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:42:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:42:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:42:24,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:42:24,665 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:42:24,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:42:24 BoogieIcfgContainer [2020-10-14 19:42:24,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:42:24,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:42:24,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:42:24,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:42:24,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:42:11" (1/3) ... [2020-10-14 19:42:24,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a412c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:42:24, skipping insertion in model container [2020-10-14 19:42:24,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:42:15" (2/3) ... [2020-10-14 19:42:24,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a412c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:42:24, skipping insertion in model container [2020-10-14 19:42:24,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:42:24" (3/3) ... [2020-10-14 19:42:24,695 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label31.c [2020-10-14 19:42:24,703 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:42:24,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:42:24,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:42:24,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:42:24,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:42:24,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:42:24,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:42:24,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:42:24,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:42:24,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:42:24,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:42:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 19:42:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-14 19:42:24,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:42:24,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:24,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:42:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:42:24,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1676017825, now seen corresponding path program 1 times [2020-10-14 19:42:24,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:42:24,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068130247] [2020-10-14 19:42:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:42:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:30,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1708 [2020-10-14 19:42:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-14 19:42:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:30,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:42:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:42:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1702 [2020-10-14 19:42:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:42:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:42:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:42:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:42:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:32,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:42:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:42:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:42:34,943 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 19:42:34,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068130247] [2020-10-14 19:42:34,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:42:34,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:42:34,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137501900] [2020-10-14 19:42:34,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:42:34,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:42:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:42:34,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:42:34,969 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 19:42:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:42:51,425 INFO L93 Difference]: Finished difference Result 6310 states and 11850 transitions. [2020-10-14 19:42:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:42:51,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1686 [2020-10-14 19:42:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:42:51,485 INFO L225 Difference]: With dead ends: 6310 [2020-10-14 19:42:51,485 INFO L226 Difference]: Without dead ends: 4024 [2020-10-14 19:42:51,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 19:42:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-14 19:42:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997. [2020-10-14 19:42:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-14 19:42:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions. [2020-10-14 19:42:51,721 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1686 [2020-10-14 19:42:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:42:51,726 INFO L479 AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions. [2020-10-14 19:42:51,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:42:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions. [2020-10-14 19:42:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1696 [2020-10-14 19:42:51,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:42:51,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:51,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:42:51,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:42:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:42:51,899 INFO L82 PathProgramCache]: Analyzing trace with hash -357821546, now seen corresponding path program 1 times [2020-10-14 19:42:51,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:42:51,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683161269] [2020-10-14 19:42:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:42:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:57,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:57,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1719 [2020-10-14 19:42:57,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:42:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 19:42:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:57,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:42:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:42:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1699 [2020-10-14 19:42:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:42:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:42:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:58,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:42:58,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:42:58,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:58,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:42:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:42:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:42:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:42:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:58,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:58,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:42:58,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:42:58,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:58,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:58,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:42:58,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:42:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:43:01,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683161269] [2020-10-14 19:43:01,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:43:01,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:43:01,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453386010] [2020-10-14 19:43:01,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:43:01,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:43:01,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:43:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:43:01,300 INFO L87 Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 5 states. [2020-10-14 19:43:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:43:20,195 INFO L93 Difference]: Finished difference Result 9818 states and 16384 transitions. [2020-10-14 19:43:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:43:20,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1695 [2020-10-14 19:43:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:43:20,230 INFO L225 Difference]: With dead ends: 9818 [2020-10-14 19:43:20,231 INFO L226 Difference]: Without dead ends: 5827 [2020-10-14 19:43:20,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 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 19:43:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2020-10-14 19:43:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5817. [2020-10-14 19:43:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5817 states. [2020-10-14 19:43:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 8831 transitions. [2020-10-14 19:43:20,392 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 8831 transitions. Word has length 1695 [2020-10-14 19:43:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:43:20,395 INFO L479 AbstractCegarLoop]: Abstraction has 5817 states and 8831 transitions. [2020-10-14 19:43:20,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:43:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 8831 transitions. [2020-10-14 19:43:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2020-10-14 19:43:20,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:43:20,520 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:20,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:43:20,521 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:43:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:43:20,522 INFO L82 PathProgramCache]: Analyzing trace with hash -565999090, now seen corresponding path program 1 times [2020-10-14 19:43:20,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:43:20,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168557640] [2020-10-14 19:43:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:43:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:25,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:25,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1736 [2020-10-14 19:43:25,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:43:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 19:43:25,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:25,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 19:43:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:43:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-14 19:43:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:32,498 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-14 19:43:32,631 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-14 19:43:32,779 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-14 19:43:33,700 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-14 19:43:33,861 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-14 19:43:34,121 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2020-10-14 19:43:34,301 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2020-10-14 19:43:34,465 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-14 19:43:34,643 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-14 19:43:34,860 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2020-10-14 19:43:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:43:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:43:34,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:43:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:43:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:34,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:43:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:43:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:43:34,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:34,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:43:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:43:34,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:43:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:43:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:34,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:43:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:43:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:43:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:34,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:43:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:34,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:43:34,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:43:34,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:43:34,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:34,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:43:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:43:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:43:35,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:43:57,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168557640] [2020-10-14 19:43:57,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:43:57,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 19:43:57,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543839128] [2020-10-14 19:43:57,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 19:43:57,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:43:57,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 19:43:57,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-14 19:43:57,081 INFO L87 Difference]: Start difference. First operand 5817 states and 8831 transitions. Second operand 23 states. [2020-10-14 19:43:57,584 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-14 19:43:58,438 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 19:44:20,489 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-14 19:44:21,966 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-14 19:44:23,398 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-14 19:44:26,534 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 19:44:27,605 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-14 19:44:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:44:33,955 INFO L93 Difference]: Finished difference Result 12921 states and 20270 transitions. [2020-10-14 19:44:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 19:44:33,956 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1710 [2020-10-14 19:44:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:44:33,991 INFO L225 Difference]: With dead ends: 12921 [2020-10-14 19:44:33,991 INFO L226 Difference]: Without dead ends: 7110 [2020-10-14 19:44:34,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 19:44:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2020-10-14 19:44:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 7103. [2020-10-14 19:44:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7103 states. [2020-10-14 19:44:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 10139 transitions. [2020-10-14 19:44:34,165 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 10139 transitions. Word has length 1710 [2020-10-14 19:44:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:44:34,168 INFO L479 AbstractCegarLoop]: Abstraction has 7103 states and 10139 transitions. [2020-10-14 19:44:34,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 19:44:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 10139 transitions. [2020-10-14 19:44:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2020-10-14 19:44:34,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:44:34,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:44:34,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:44:34,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:44:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:44:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash 297042374, now seen corresponding path program 1 times [2020-10-14 19:44:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:44:34,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477928463] [2020-10-14 19:44:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:44:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:44:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:39,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1739 [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 19:44:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:44:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-14 19:44:39,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:44:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:44:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:44:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:44:41,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:44:41,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:44:41,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:44:41,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:44:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:44:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:44:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:41,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:44:41,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:44:41,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:44:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:44:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:44:41,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:44:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:44:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:44:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:44:41,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:44:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:44:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:44:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:44:42,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:44:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:44:42,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:44:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:44:42,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:44:42,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:44:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:44:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:44:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:44:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:44:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:44:56,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477928463] [2020-10-14 19:44:56,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:44:56,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 19:44:56,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122625986] [2020-10-14 19:44:56,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 19:44:56,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:44:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 19:44:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-14 19:44:56,211 INFO L87 Difference]: Start difference. First operand 7103 states and 10139 transitions. Second operand 22 states. [2020-10-14 19:45:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:45:49,690 INFO L93 Difference]: Finished difference Result 25039 states and 37847 transitions. [2020-10-14 19:45:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:45:49,692 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1713 [2020-10-14 19:45:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:45:49,760 INFO L225 Difference]: With dead ends: 25039 [2020-10-14 19:45:49,761 INFO L226 Difference]: Without dead ends: 17942 [2020-10-14 19:45:49,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2020-10-14 19:45:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17942 states. [2020-10-14 19:45:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17942 to 17900. [2020-10-14 19:45:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17900 states. [2020-10-14 19:45:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17900 states to 17900 states and 23533 transitions. [2020-10-14 19:45:50,247 INFO L78 Accepts]: Start accepts. Automaton has 17900 states and 23533 transitions. Word has length 1713 [2020-10-14 19:45:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:45:50,248 INFO L479 AbstractCegarLoop]: Abstraction has 17900 states and 23533 transitions. [2020-10-14 19:45:50,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 19:45:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17900 states and 23533 transitions. [2020-10-14 19:45:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2020-10-14 19:45:50,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:45:50,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:50,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:45:50,333 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:45:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:45:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1891757020, now seen corresponding path program 1 times [2020-10-14 19:45:50,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:45:50,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64621127] [2020-10-14 19:45:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:45:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:45:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:45:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:45:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:45:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking...