/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:37:10,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:37:10,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:37:10,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:37:10,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:37:10,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:37:10,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:37:10,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:37:10,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:37:10,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:37:10,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:37:10,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:37:10,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:37:10,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:37:10,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:37:10,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:37:10,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:37:10,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:37:10,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:37:10,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:37:10,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:37:10,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:37:10,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:37:10,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:37:10,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:37:10,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:37:10,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:37:10,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:37:10,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:37:10,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:37:10,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:37:10,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:37:10,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:37:10,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:37:10,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:37:10,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:37:10,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:37:10,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:37:10,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:37:10,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:37:10,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:37:10,952 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 04:37:11,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:37:11,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:37:11,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:37:11,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:37:11,020 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:37:11,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:37:11,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:37:11,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:37:11,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:37:11,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:37:11,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:37:11,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:37:11,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:37:11,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:37:11,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:37:11,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:37:11,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:37:11,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:37:11,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:37:11,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:37:11,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:37:11,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:37:11,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:37:11,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:37:11,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:37:11,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:37:11,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:37:11,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:37:11,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:37:11,028 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 04:37:11,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:37:11,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:37:11,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:37:11,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:37:11,440 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:37:11,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label43.c [2020-10-14 04:37:11,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cbe9db36/b80b2db46bbc4646ba2aaab301b56cdc/FLAG3bb0adf08 [2020-10-14 04:37:12,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:37:12,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label43.c [2020-10-14 04:37:12,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cbe9db36/b80b2db46bbc4646ba2aaab301b56cdc/FLAG3bb0adf08 [2020-10-14 04:37:12,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cbe9db36/b80b2db46bbc4646ba2aaab301b56cdc [2020-10-14 04:37:12,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:37:12,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:37:12,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:37:12,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:37:12,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:37:12,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:37:12" (1/1) ... [2020-10-14 04:37:12,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:12, skipping insertion in model container [2020-10-14 04:37:12,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:37:12" (1/1) ... [2020-10-14 04:37:12,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:37:13,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:37:15,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:37:15,727 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:37:16,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:37:16,923 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:37:16,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16 WrapperNode [2020-10-14 04:37:16,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:37:16,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:37:16,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:37:16,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:37:16,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:16,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:17,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:17,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:17,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:17,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:17,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (1/1) ... [2020-10-14 04:37:17,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:37:17,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:37:17,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:37:17,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:37:17,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (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 04:37:17,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:37:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:37:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:37:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:37:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:37:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:37:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:37:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:37:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:37:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:37:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:37:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:37:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:37:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:37:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:37:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:37:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:37:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:37:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:37:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:37:17,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:37:32,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:37:32,501 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:37:32,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:37:32 BoogieIcfgContainer [2020-10-14 04:37:32,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:37:32,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:37:32,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:37:32,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:37:32,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:37:12" (1/3) ... [2020-10-14 04:37:32,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bf03ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:37:32, skipping insertion in model container [2020-10-14 04:37:32,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:37:16" (2/3) ... [2020-10-14 04:37:32,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bf03ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:37:32, skipping insertion in model container [2020-10-14 04:37:32,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:37:32" (3/3) ... [2020-10-14 04:37:32,535 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label43.c [2020-10-14 04:37:32,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:37:32,561 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:37:32,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:37:32,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:37:32,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:37:32,621 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:37:32,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:37:32,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:37:32,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:37:32,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:37:32,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:37:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:37:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:37:32,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:37:32,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:37:32,687 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:37:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:37:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1129276774, now seen corresponding path program 1 times [2020-10-14 04:37:32,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:37:32,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963877920] [2020-10-14 04:37:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:37:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:33,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:37:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 04:37:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:33,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:37:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:37:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:37:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:37:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:37:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:33,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:33,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:37:33,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:37:33,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:33,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:37:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:33,583 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 04:37:33,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963877920] [2020-10-14 04:37:33,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:37:33,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:37:33,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048035080] [2020-10-14 04:37:33,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:37:33,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:37:33,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:37:33,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:37:33,621 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:38:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:38:03,504 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 04:38:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:38:03,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-14 04:38:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:38:03,561 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 04:38:03,562 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 04:38:03,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:38:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 04:38:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 04:38:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 04:38:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 04:38:03,843 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 28 [2020-10-14 04:38:03,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:38:03,844 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 04:38:03,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:38:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 04:38:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 04:38:03,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:38:03,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:03,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:38:03,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:38:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:38:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 72973317, now seen corresponding path program 1 times [2020-10-14 04:38:03,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:38:03,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963390092] [2020-10-14 04:38:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:38:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:38:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:38:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1732 [2020-10-14 04:38:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:05,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:38:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:38:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:38:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:38:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:38:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:05,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:05,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:38:05,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:38:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:05,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:38:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:38:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:38:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:05,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:05,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:38:05,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 04:38:06,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:06,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:38:06,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:38:06,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963390092] [2020-10-14 04:38:06,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:38:06,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:38:06,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552778768] [2020-10-14 04:38:06,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:38:06,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:38:06,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:38:06,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:38:06,061 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 5 states. [2020-10-14 04:38:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:38:40,605 INFO L93 Difference]: Finished difference Result 9246 states and 16039 transitions. [2020-10-14 04:38:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:38:40,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-14 04:38:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:38:40,648 INFO L225 Difference]: With dead ends: 9246 [2020-10-14 04:38:40,649 INFO L226 Difference]: Without dead ends: 6053 [2020-10-14 04:38:40,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:38:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2020-10-14 04:38:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 6045. [2020-10-14 04:38:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6045 states. [2020-10-14 04:38:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 8817 transitions. [2020-10-14 04:38:40,872 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 8817 transitions. Word has length 100 [2020-10-14 04:38:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:38:40,873 INFO L479 AbstractCegarLoop]: Abstraction has 6045 states and 8817 transitions. [2020-10-14 04:38:40,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:38:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 8817 transitions. [2020-10-14 04:38:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 04:38:40,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:38:40,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:40,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:38:40,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:38:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:38:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 736809605, now seen corresponding path program 1 times [2020-10-14 04:38:40,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:38:40,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160722006] [2020-10-14 04:38:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:38:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:41,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 04:38:41,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:38:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-10-14 04:38:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:41,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:38:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:38:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:38:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:38:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:38:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:38:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:41,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:38:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:38:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:38:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:42,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:38:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:38:42,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:42,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:38:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:38:42,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160722006] [2020-10-14 04:38:42,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:38:42,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:38:42,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914202993] [2020-10-14 04:38:42,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:38:42,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:38:42,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:38:42,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:38:42,158 INFO L87 Difference]: Start difference. First operand 6045 states and 8817 transitions. Second operand 5 states. [2020-10-14 04:39:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:39:19,789 INFO L93 Difference]: Finished difference Result 14919 states and 22787 transitions. [2020-10-14 04:39:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:39:19,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 04:39:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:39:19,830 INFO L225 Difference]: With dead ends: 14919 [2020-10-14 04:39:19,830 INFO L226 Difference]: Without dead ends: 8880 [2020-10-14 04:39:19,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:39:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2020-10-14 04:39:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8870. [2020-10-14 04:39:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8870 states. [2020-10-14 04:39:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 12191 transitions. [2020-10-14 04:39:20,060 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 12191 transitions. Word has length 109 [2020-10-14 04:39:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:39:20,063 INFO L479 AbstractCegarLoop]: Abstraction has 8870 states and 12191 transitions. [2020-10-14 04:39:20,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:39:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 12191 transitions. [2020-10-14 04:39:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 04:39:20,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:20,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:20,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:39:20,076 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1595288620, now seen corresponding path program 1 times [2020-10-14 04:39:20,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:20,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435353730] [2020-10-14 04:39:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:21,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:21,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:39:21,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:39:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-14 04:39:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:39:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:39:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:39:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:21,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:21,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:21,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:39:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:21,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:39:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:39:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:39:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:39:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:39:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:21,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:39:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:39:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:39:21,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435353730] [2020-10-14 04:39:21,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:39:21,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:39:21,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117727127] [2020-10-14 04:39:21,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:39:21,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:21,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:39:21,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:39:21,426 INFO L87 Difference]: Start difference. First operand 8870 states and 12191 transitions. Second operand 6 states. [2020-10-14 04:40:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:00,508 INFO L93 Difference]: Finished difference Result 22022 states and 30884 transitions. [2020-10-14 04:40:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:00,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-14 04:40:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:00,640 INFO L225 Difference]: With dead ends: 22022 [2020-10-14 04:40:00,641 INFO L226 Difference]: Without dead ends: 13158 [2020-10-14 04:40:00,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:40:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2020-10-14 04:40:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 11700. [2020-10-14 04:40:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11700 states. [2020-10-14 04:40:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11700 states to 11700 states and 16684 transitions. [2020-10-14 04:40:01,001 INFO L78 Accepts]: Start accepts. Automaton has 11700 states and 16684 transitions. Word has length 115 [2020-10-14 04:40:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:01,002 INFO L479 AbstractCegarLoop]: Abstraction has 11700 states and 16684 transitions. [2020-10-14 04:40:01,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:40:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11700 states and 16684 transitions. [2020-10-14 04:40:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 04:40:01,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:01,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:01,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:40:01,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1588271933, now seen corresponding path program 1 times [2020-10-14 04:40:01,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:01,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558489573] [2020-10-14 04:40:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:01,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:01,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:01,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 04:40:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:40:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-14 04:40:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:01,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 04:40:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:01,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:01,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:01,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:40:01,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:01,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:02,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:40:02,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 04:40:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:02,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 04:40:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:02,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558489573] [2020-10-14 04:40:02,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:40:02,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:40:02,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168102875] [2020-10-14 04:40:02,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:40:02,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:40:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:02,246 INFO L87 Difference]: Start difference. First operand 11700 states and 16684 transitions. Second operand 5 states. [2020-10-14 04:41:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:01,679 INFO L93 Difference]: Finished difference Result 34688 states and 50608 transitions. [2020-10-14 04:41:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:01,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 04:41:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:01,766 INFO L225 Difference]: With dead ends: 34688 [2020-10-14 04:41:01,767 INFO L226 Difference]: Without dead ends: 22994 [2020-10-14 04:41:01,790 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 04:41:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22994 states. [2020-10-14 04:41:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22994 to 22969. [2020-10-14 04:41:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22969 states. [2020-10-14 04:41:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22969 states to 22969 states and 32579 transitions. [2020-10-14 04:41:02,325 INFO L78 Accepts]: Start accepts. Automaton has 22969 states and 32579 transitions. Word has length 151 [2020-10-14 04:41:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:02,326 INFO L479 AbstractCegarLoop]: Abstraction has 22969 states and 32579 transitions. [2020-10-14 04:41:02,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:41:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22969 states and 32579 transitions. [2020-10-14 04:41:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 04:41:02,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:02,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:41:02,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:41:02,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1442815371, now seen corresponding path program 1 times [2020-10-14 04:41:02,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:02,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62233740] [2020-10-14 04:41:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:02,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 04:41:03,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:41:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-14 04:41:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:03,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-14 04:41:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:03,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:03,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:03,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:41:03,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:03,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:41:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:03,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:03,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 04:41:03,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 04:41:03,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:03,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 04:41:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:03,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62233740] [2020-10-14 04:41:03,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:03,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:41:03,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905204866] [2020-10-14 04:41:03,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:03,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:03,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:03,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:03,618 INFO L87 Difference]: Start difference. First operand 22969 states and 32579 transitions. Second operand 5 states.