/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:39:17,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:39:17,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:39:17,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:39:17,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:39:17,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:39:17,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:39:17,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:39:17,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:39:17,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:39:17,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:39:17,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:39:17,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:39:17,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:39:17,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:39:17,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:39:17,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:39:17,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:39:17,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:39:17,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:39:17,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:39:17,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:39:17,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:39:17,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:39:17,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:39:17,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:39:17,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:39:17,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:39:17,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:39:17,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:39:17,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:39:17,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:39:17,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:39:17,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:39:17,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:39:17,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:39:17,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:39:17,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:39:17,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:39:17,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:39:17,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:39:17,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:39:17,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:39:17,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:39:17,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:39:17,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:39:17,775 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:39:17,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:39:17,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:39:17,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:39:17,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:39:17,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:39:17,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:39:17,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:39:17,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:39:17,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:39:17,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:39:17,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:39:17,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:39:17,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:39:17,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:39:17,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:39:17,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:39:17,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:39:17,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:39:17,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:39:17,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:39:17,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:39:17,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:39:17,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:39:17,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:39:17,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:39:18,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:39:18,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:39:18,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:39:18,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:39:18,128 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:39:18,128 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2020-10-14 04:39:18,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7812893a4/ed378c2db0c448709daaf7eed18f9061/FLAG5062abf93 [2020-10-14 04:39:19,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:39:19,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2020-10-14 04:39:19,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7812893a4/ed378c2db0c448709daaf7eed18f9061/FLAG5062abf93 [2020-10-14 04:39:19,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7812893a4/ed378c2db0c448709daaf7eed18f9061 [2020-10-14 04:39:19,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:39:19,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:39:19,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:39:19,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:39:19,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:39:19,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:39:19" (1/1) ... [2020-10-14 04:39:19,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc47136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:19, skipping insertion in model container [2020-10-14 04:39:19,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:39:19" (1/1) ... [2020-10-14 04:39:19,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:39:19,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:39:22,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:39:22,284 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:39:23,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:39:23,343 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:39:23,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23 WrapperNode [2020-10-14 04:39:23,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:39:23,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:39:23,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:39:23,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:39:23,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... [2020-10-14 04:39:23,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:39:23,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:39:23,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:39:23,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:39:23,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:39:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:39:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:39:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:39:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:39:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:39:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:39:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:39:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:39:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:39:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:39:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:39:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:39:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:39:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:39:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:39:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:39:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:39:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:39:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:39:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:39:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:39:38,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:39:38,512 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:39:38,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:38 BoogieIcfgContainer [2020-10-14 04:39:38,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:39:38,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:39:38,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:39:38,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:39:38,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:39:19" (1/3) ... [2020-10-14 04:39:38,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6808dc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:38, skipping insertion in model container [2020-10-14 04:39:38,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:23" (2/3) ... [2020-10-14 04:39:38,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6808dc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:38, skipping insertion in model container [2020-10-14 04:39:38,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:38" (3/3) ... [2020-10-14 04:39:38,556 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label50.c [2020-10-14 04:39:38,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:39:38,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:39:38,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:39:38,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:39:38,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:39:38,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:39:38,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:39:38,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:39:38,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:39:38,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:39:38,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:39:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:39:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:39:38,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:38,753 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] [2020-10-14 04:39:38,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:38,763 INFO L82 PathProgramCache]: Analyzing trace with hash 758600274, now seen corresponding path program 1 times [2020-10-14 04:39:38,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:38,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825589798] [2020-10-14 04:39:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:39,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:39:39,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 04:39:39,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:39,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:39:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:39:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:39:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:39:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:39,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:39,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:39:39,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:39,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:39,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:39:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:39:39,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825589798] [2020-10-14 04:39:39,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:39:39,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:39:39,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229194216] [2020-10-14 04:39:39,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:39:39,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:39:39,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:39:39,581 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:40:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:07,794 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 04:40:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:07,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 04:40:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:07,861 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 04:40:07,861 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 04:40:07,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 04:40:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 04:40:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 04:40:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 04:40:08,103 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 26 [2020-10-14 04:40:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:08,104 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 04:40:08,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:40:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 04:40:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:40:08,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:08,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:40:08,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:40:08,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash 83370996, now seen corresponding path program 1 times [2020-10-14 04:40:08,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:08,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332352781] [2020-10-14 04:40:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:10,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:10,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:40:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:40:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2528 [2020-10-14 04:40:10,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:10,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:40:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:40:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:10,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:10,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:10,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:40:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:10,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:40:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:10,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:10,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:40:10,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 04:40:10,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:10,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:40:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:11,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332352781] [2020-10-14 04:40:11,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:40:11,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:40:11,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726726555] [2020-10-14 04:40:11,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:40:11,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:11,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:40:11,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:11,057 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-14 04:40:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:50,606 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-14 04:40:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:50,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 04:40:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:50,652 INFO L225 Difference]: With dead ends: 9218 [2020-10-14 04:40:50,653 INFO L226 Difference]: Without dead ends: 6040 [2020-10-14 04:40:50,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:40:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-14 04:40:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-14 04:40:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 04:40:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-14 04:40:50,867 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 99 [2020-10-14 04:40:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:50,868 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-14 04:40:50,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:40:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-14 04:40:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:40:50,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:50,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:40:50,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:40:50,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:50,872 INFO L82 PathProgramCache]: Analyzing trace with hash 223919606, now seen corresponding path program 1 times [2020-10-14 04:40:50,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:50,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336038703] [2020-10-14 04:40:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:51,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:40:51,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:40:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-14 04:40:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:51,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:40:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:40:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:40:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:40:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:51,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:40:51,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:51,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:52,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:40:52,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:40:52,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:40:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:52,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336038703] [2020-10-14 04:40:52,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:40:52,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:40:52,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229804388] [2020-10-14 04:40:52,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:40:52,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:52,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:40:52,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:40:52,219 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 6 states. [2020-10-14 04:42:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:00,503 INFO L93 Difference]: Finished difference Result 23450 states and 33202 transitions. [2020-10-14 04:42:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:42:00,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 04:42:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:00,605 INFO L225 Difference]: With dead ends: 23450 [2020-10-14 04:42:00,606 INFO L226 Difference]: Without dead ends: 17432 [2020-10-14 04:42:00,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:42:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17432 states. [2020-10-14 04:42:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17432 to 17343. [2020-10-14 04:42:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17343 states. [2020-10-14 04:42:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 23003 transitions. [2020-10-14 04:42:01,143 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 23003 transitions. Word has length 99 [2020-10-14 04:42:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:01,145 INFO L479 AbstractCegarLoop]: Abstraction has 17343 states and 23003 transitions. [2020-10-14 04:42:01,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:42:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 23003 transitions. [2020-10-14 04:42:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 04:42:01,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:01,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:42:01,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:42:01,166 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:01,166 INFO L82 PathProgramCache]: Analyzing trace with hash -978538554, now seen corresponding path program 1 times [2020-10-14 04:42:01,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:01,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350352275] [2020-10-14 04:42:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:05,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:05,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 04:42:05,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:42:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3845 [2020-10-14 04:42:05,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:05,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 04:42:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:42:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:05,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:05,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:05,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:42:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:05,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:05,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:42:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:42:05,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:05,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 04:42:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:42:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 04:42:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:05,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:42:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:42:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:42:05,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350352275] [2020-10-14 04:42:05,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:42:05,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:42:05,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011117501] [2020-10-14 04:42:05,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:05,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:05,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:05,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:05,518 INFO L87 Difference]: Start difference. First operand 17343 states and 23003 transitions. Second operand 5 states. [2020-10-14 04:43:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:06,658 INFO L93 Difference]: Finished difference Result 51476 states and 69286 transitions. [2020-10-14 04:43:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:43:06,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 04:43:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:06,779 INFO L225 Difference]: With dead ends: 51476 [2020-10-14 04:43:06,779 INFO L226 Difference]: Without dead ends: 34139 [2020-10-14 04:43:06,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34139 states. [2020-10-14 04:43:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34139 to 34117. [2020-10-14 04:43:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34117 states. [2020-10-14 04:43:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34117 states to 34117 states and 41666 transitions. [2020-10-14 04:43:07,637 INFO L78 Accepts]: Start accepts. Automaton has 34117 states and 41666 transitions. Word has length 186 [2020-10-14 04:43:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:07,641 INFO L479 AbstractCegarLoop]: Abstraction has 34117 states and 41666 transitions. [2020-10-14 04:43:07,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:43:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 34117 states and 41666 transitions. [2020-10-14 04:43:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 04:43:07,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:07,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:07,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:43:07,649 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:07,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1699307722, now seen corresponding path program 1 times [2020-10-14 04:43:07,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:07,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792018089] [2020-10-14 04:43:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:07,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:12,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 04:43:12,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:43:12,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:43:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:12,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:43:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:43:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:12,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:12,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:12,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:43:12,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:43:12,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:12,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:12,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:43:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:12,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:43:12,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:43:12,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:12,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:12,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 04:43:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:13,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:43:13,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 04:43:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:13,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 04:43:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:43:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:43:13,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792018089] [2020-10-14 04:43:13,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:43:13,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:43:13,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776972880] [2020-10-14 04:43:13,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:43:13,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:13,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:43:13,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:13,099 INFO L87 Difference]: Start difference. First operand 34117 states and 41666 transitions. Second operand 5 states.