/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/Problem19_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:05:11,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:05:11,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:05:11,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:05:11,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:05:11,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:05:11,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:05:11,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:05:11,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:05:11,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:05:11,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:05:11,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:05:11,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:05:11,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:05:11,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:05:11,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:05:11,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:05:11,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:05:11,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:05:11,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:05:11,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:05:11,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:05:11,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:05:11,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:05:11,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:05:11,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:05:11,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:05:11,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:05:11,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:05:11,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:05:11,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:05:11,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:05:11,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:05:11,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:05:11,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:05:11,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:05:11,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:05:11,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:05:11,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:05:11,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:05:11,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:05:11,734 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 23:05:11,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:05:11,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:05:11,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:05:11,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:05:11,761 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:05:11,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:05:11,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:05:11,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:05:11,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:05:11,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:05:11,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:05:11,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:05:11,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:05:11,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:05:11,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:05:11,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:05:11,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:05:11,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:05:11,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:05:11,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:05:11,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:05:11,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:05:11,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:05:11,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:05:11,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:05:11,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:05:11,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:05:11,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:05:11,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:05:11,766 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 23:05:12,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:05:12,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:05:12,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:05:12,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:05:12,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:05:12,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32.c [2020-10-14 23:05:12,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832a2a1b1/2b3715a8c38e4440bf295950268ee5f1/FLAG5f580e878 [2020-10-14 23:05:13,089 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:05:13,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label32.c [2020-10-14 23:05:13,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832a2a1b1/2b3715a8c38e4440bf295950268ee5f1/FLAG5f580e878 [2020-10-14 23:05:13,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832a2a1b1/2b3715a8c38e4440bf295950268ee5f1 [2020-10-14 23:05:13,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:05:13,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:05:13,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:05:13,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:05:13,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:05:13,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:05:13" (1/1) ... [2020-10-14 23:05:13,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5c20e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:13, skipping insertion in model container [2020-10-14 23:05:13,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:05:13" (1/1) ... [2020-10-14 23:05:13,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:05:13,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:05:16,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:05:16,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:05:17,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:05:17,625 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:05:17,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17 WrapperNode [2020-10-14 23:05:17,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:05:17,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:05:17,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:05:17,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:05:17,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:17,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:17,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:17,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:17,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:17,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:18,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (1/1) ... [2020-10-14 23:05:18,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:05:18,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:05:18,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:05:18,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:05:18,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (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 23:05:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:05:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:05:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:05:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:05:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:05:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:05:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:05:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:05:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:05:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:05:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:05:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:05:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:05:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:05:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:05:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:05:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:05:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:05:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:05:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:05:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:05:30,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:05:30,854 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:05:30,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:05:30 BoogieIcfgContainer [2020-10-14 23:05:30,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:05:30,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:05:30,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:05:30,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:05:30,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:05:13" (1/3) ... [2020-10-14 23:05:30,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea17c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:05:30, skipping insertion in model container [2020-10-14 23:05:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:05:17" (2/3) ... [2020-10-14 23:05:30,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea17c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:05:30, skipping insertion in model container [2020-10-14 23:05:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:05:30" (3/3) ... [2020-10-14 23:05:30,889 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label32.c [2020-10-14 23:05:30,899 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:05:30,913 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:05:30,928 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:05:30,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:05:30,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:05:30,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:05:30,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:05:30,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:05:30,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:05:30,971 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:05:30,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:05:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:05:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:05:31,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:31,035 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] [2020-10-14 23:05:31,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1964133324, now seen corresponding path program 1 times [2020-10-14 23:05:31,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:31,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229858697] [2020-10-14 23:05:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:31,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:05:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 23:05:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:31,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:05:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:05:31,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:05:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:05:31,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229858697] [2020-10-14 23:05:31,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:05:31,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:05:31,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112981887] [2020-10-14 23:05:31,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:05:31,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:05:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:05:31,786 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:05:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:05:57,407 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 23:05:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:05:57,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 23:05:57,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:05:57,467 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 23:05:57,468 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 23:05:57,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:05:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 23:05:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 23:05:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 23:05:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 23:05:57,749 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 25 [2020-10-14 23:05:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:05:57,750 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 23:05:57,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:05:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 23:05:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 23:05:57,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:57,760 INFO L422 BasicCegarLoop]: trace histogram [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 23:05:57,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:05:57,761 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:57,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1823248576, now seen corresponding path program 1 times [2020-10-14 23:05:57,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:57,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446090058] [2020-10-14 23:05:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:58,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 23:05:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:05:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-14 23:05:58,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:58,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:05:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:05:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:59,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:59,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:59,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:59,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:05:59,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:59,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:59,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:05:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:05:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 23:05:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:59,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:05:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:05:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:05:59,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446090058] [2020-10-14 23:05:59,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:05:59,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:05:59,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469297072] [2020-10-14 23:05:59,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:05:59,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:59,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:05:59,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:05:59,525 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 7 states. [2020-10-14 23:06:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:06:33,839 INFO L93 Difference]: Finished difference Result 9566 states and 16486 transitions. [2020-10-14 23:06:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:06:33,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-14 23:06:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:06:33,885 INFO L225 Difference]: With dead ends: 9566 [2020-10-14 23:06:33,885 INFO L226 Difference]: Without dead ends: 6373 [2020-10-14 23:06:33,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:06:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2020-10-14 23:06:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6255. [2020-10-14 23:06:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6255 states. [2020-10-14 23:06:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 10365 transitions. [2020-10-14 23:06:34,094 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 10365 transitions. Word has length 97 [2020-10-14 23:06:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:06:34,095 INFO L479 AbstractCegarLoop]: Abstraction has 6255 states and 10365 transitions. [2020-10-14 23:06:34,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:06:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 10365 transitions. [2020-10-14 23:06:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:06:34,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:34,106 INFO L422 BasicCegarLoop]: trace histogram [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 23:06:34,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:06:34,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1355988010, now seen corresponding path program 1 times [2020-10-14 23:06:34,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:34,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193812214] [2020-10-14 23:06:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:34,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:34,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 23:06:34,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:06:34,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-14 23:06:34,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:35,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:06:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 23:06:35,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:35,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:35,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:35,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:35,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:06:35,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:35,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:35,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:06:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:35,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:06:35,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:06:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 23:06:35,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:35,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:06:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:06:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:06:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:06:35,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193812214] [2020-10-14 23:06:35,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:06:35,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:06:35,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426182264] [2020-10-14 23:06:35,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:06:35,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:35,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:06:35,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:06:35,451 INFO L87 Difference]: Start difference. First operand 6255 states and 10365 transitions. Second operand 7 states. [2020-10-14 23:07:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:07:13,561 INFO L93 Difference]: Finished difference Result 18693 states and 31353 transitions. [2020-10-14 23:07:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:07:13,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-14 23:07:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:07:13,617 INFO L225 Difference]: With dead ends: 18693 [2020-10-14 23:07:13,617 INFO L226 Difference]: Without dead ends: 12444 [2020-10-14 23:07:13,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:07:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12444 states. [2020-10-14 23:07:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12444 to 12198. [2020-10-14 23:07:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12198 states. [2020-10-14 23:07:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12198 states to 12198 states and 18357 transitions. [2020-10-14 23:07:13,946 INFO L78 Accepts]: Start accepts. Automaton has 12198 states and 18357 transitions. Word has length 100 [2020-10-14 23:07:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:07:13,948 INFO L479 AbstractCegarLoop]: Abstraction has 12198 states and 18357 transitions. [2020-10-14 23:07:13,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:07:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 12198 states and 18357 transitions. [2020-10-14 23:07:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 23:07:13,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:07:13,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:07:13,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:07:13,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:07:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:07:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1001896696, now seen corresponding path program 1 times [2020-10-14 23:07:13,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:07:13,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179377163] [2020-10-14 23:07:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:07:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:15,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:15,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:07:15,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:07:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-14 23:07:15,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:15,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:07:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:07:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:07:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:07:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:07:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:07:15,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:15,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:07:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:07:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:07:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:15,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:07:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:15,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:15,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:07:15,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 23:07:15,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:15,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:07:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:07:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:07:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:07:15,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179377163] [2020-10-14 23:07:15,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:07:15,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:07:15,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939369795] [2020-10-14 23:07:15,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:07:15,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:07:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:07:15,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:07:15,547 INFO L87 Difference]: Start difference. First operand 12198 states and 18357 transitions. Second operand 7 states. [2020-10-14 23:08:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:02,000 INFO L93 Difference]: Finished difference Result 29502 states and 44224 transitions. [2020-10-14 23:08:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:08:02,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 23:08:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:02,068 INFO L225 Difference]: With dead ends: 29502 [2020-10-14 23:08:02,069 INFO L226 Difference]: Without dead ends: 17310 [2020-10-14 23:08:02,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:08:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17310 states. [2020-10-14 23:08:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17310 to 15201. [2020-10-14 23:08:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15201 states. [2020-10-14 23:08:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15201 states to 15201 states and 21722 transitions. [2020-10-14 23:08:02,427 INFO L78 Accepts]: Start accepts. Automaton has 15201 states and 21722 transitions. Word has length 126 [2020-10-14 23:08:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:02,432 INFO L479 AbstractCegarLoop]: Abstraction has 15201 states and 21722 transitions. [2020-10-14 23:08:02,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:08:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15201 states and 21722 transitions. [2020-10-14 23:08:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 23:08:02,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:02,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:08:02,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:08:02,436 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:02,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1531031606, now seen corresponding path program 1 times [2020-10-14 23:08:02,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:02,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149606713] [2020-10-14 23:08:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 23:08:04,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:08:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1939 [2020-10-14 23:08:04,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:04,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:08:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:08:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 23:08:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:04,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:08:04,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:04,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:08:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:08:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:05,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:05,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 23:08:05,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 23:08:05,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:05,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:08:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 23:08:05,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:08:05,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149606713] [2020-10-14 23:08:05,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:08:05,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:08:05,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641755477] [2020-10-14 23:08:05,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:08:05,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:08:05,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:08:05,478 INFO L87 Difference]: Start difference. First operand 15201 states and 21722 transitions. Second operand 7 states. [2020-10-14 23:09:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:09:15,116 INFO L93 Difference]: Finished difference Result 38833 states and 55731 transitions. [2020-10-14 23:09:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:09:15,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 23:09:15,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:09:15,206 INFO L225 Difference]: With dead ends: 38833 [2020-10-14 23:09:15,206 INFO L226 Difference]: Without dead ends: 23638 [2020-10-14 23:09:15,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:09:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23638 states. [2020-10-14 23:09:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23638 to 23144. [2020-10-14 23:09:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23144 states. [2020-10-14 23:09:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 31940 transitions. [2020-10-14 23:09:15,785 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 31940 transitions. Word has length 248 [2020-10-14 23:09:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:09:15,785 INFO L479 AbstractCegarLoop]: Abstraction has 23144 states and 31940 transitions. [2020-10-14 23:09:15,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:09:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 31940 transitions. [2020-10-14 23:09:15,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 23:09:15,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:15,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:09:15,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:09:15,790 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1158304530, now seen corresponding path program 1 times [2020-10-14 23:09:15,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:15,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174939601] [2020-10-14 23:09:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:17,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:17,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 23:09:17,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:09:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-14 23:09:17,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:17,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-14 23:09:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:17,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:17,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 23:09:17,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:17,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:18,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:18,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 23:09:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 23:09:18,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:18,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 23:09:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1