/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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:32:03,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:32:03,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:32:03,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:32:03,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:32:03,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:32:03,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:32:03,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:32:03,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:32:03,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:32:03,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:32:03,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:32:03,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:32:03,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:32:03,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:32:03,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:32:03,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:32:03,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:32:03,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:32:03,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:32:03,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:32:03,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:32:03,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:32:03,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:32:03,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:32:03,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:32:03,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:32:03,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:32:03,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:32:03,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:32:03,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:32:03,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:32:03,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:32:03,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:32:03,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:32:03,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:32:03,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:32:03,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:32:03,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:32:03,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:32:03,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:32:03,707 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 04:32:03,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:32:03,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:32:03,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:32:03,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:32:03,766 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:32:03,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:32:03,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:32:03,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:32:03,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:32:03,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:32:03,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:32:03,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:32:03,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:32:03,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:32:03,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:32:03,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:32:03,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:32:03,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:32:03,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:32:03,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:32:03,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:32:03,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:32:03,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:32:03,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:32:03,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:32:03,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:32:03,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:32:03,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:32:03,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:32:03,773 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 04:32:04,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:32:04,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:32:04,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:32:04,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:32:04,133 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:32:04,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25.c [2020-10-14 04:32:04,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee205e2ef/c991df0f06dc43008738f86c65b1b19e/FLAGb2538fdcb [2020-10-14 04:32:05,241 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:32:05,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label25.c [2020-10-14 04:32:05,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee205e2ef/c991df0f06dc43008738f86c65b1b19e/FLAGb2538fdcb [2020-10-14 04:32:05,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee205e2ef/c991df0f06dc43008738f86c65b1b19e [2020-10-14 04:32:05,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:32:05,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:32:05,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:32:05,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:32:05,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:32:05,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:32:05" (1/1) ... [2020-10-14 04:32:05,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5211d524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:05, skipping insertion in model container [2020-10-14 04:32:05,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:32:05" (1/1) ... [2020-10-14 04:32:05,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:32:05,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:32:09,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:32:09,190 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:32:10,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:32:10,622 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:32:10,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10 WrapperNode [2020-10-14 04:32:10,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:32:10,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:32:10,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:32:10,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:32:10,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:10,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:10,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:10,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:10,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:11,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:11,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (1/1) ... [2020-10-14 04:32:11,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:32:11,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:32:11,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:32:11,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:32:11,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (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 04:32:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:32:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:32:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:32:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:32:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:32:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:32:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:32:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:32:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:32:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:32:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:32:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:32:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:32:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:32:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:32:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:32:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:32:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:32:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:32:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:32:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:32:23,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:32:23,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:32:23,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:32:23 BoogieIcfgContainer [2020-10-14 04:32:23,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:32:23,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:32:23,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:32:23,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:32:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:32:05" (1/3) ... [2020-10-14 04:32:23,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434d0630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:32:23, skipping insertion in model container [2020-10-14 04:32:23,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:10" (2/3) ... [2020-10-14 04:32:23,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434d0630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:32:23, skipping insertion in model container [2020-10-14 04:32:23,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:32:23" (3/3) ... [2020-10-14 04:32:23,828 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label25.c [2020-10-14 04:32:23,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:32:23,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:32:23,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:32:23,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:32:23,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:32:23,902 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:32:23,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:32:23,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:32:23,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:32:23,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:32:23,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:32:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:32:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:32:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:32:23,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:32:23,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:32:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:32:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1757893778, now seen corresponding path program 1 times [2020-10-14 04:32:23,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:32:23,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401520453] [2020-10-14 04:32:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:32:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:24,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:32:24,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 04:32:24,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:24,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:32:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:32:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:32:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:32:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:24,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:24,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:32:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:24,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:32:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:24,801 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 04:32:24,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401520453] [2020-10-14 04:32:24,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:32:24,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:32:24,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029222195] [2020-10-14 04:32:24,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:32:24,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:24,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:32:24,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:32:24,834 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:32:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:32:46,895 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 04:32:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:32:46,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 04:32:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:32:46,948 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 04:32:46,949 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 04:32:46,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 04:32:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 04:32:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 04:32:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 04:32:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 04:32:47,170 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 42 [2020-10-14 04:32:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:32:47,171 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 04:32:47,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:32:47,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 04:32:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 04:32:47,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:32:47,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:47,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:32:47,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:32:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:32:47,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2063047884, now seen corresponding path program 1 times [2020-10-14 04:32:47,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:32:47,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323212636] [2020-10-14 04:32:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:32:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:49,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:32:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:32:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-14 04:32:49,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:49,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:32:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:32:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:32:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:49,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:49,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:49,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:32:49,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:49,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:32:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:32:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:32:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:49,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:32:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:32:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:49,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:32:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:32:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:32:49,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323212636] [2020-10-14 04:32:49,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:32:49,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:32:49,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739563018] [2020-10-14 04:32:49,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:32:49,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:32:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:32:49,638 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-14 04:33:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:33:22,504 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-14 04:33:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:33:22,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 04:33:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:33:22,539 INFO L225 Difference]: With dead ends: 9218 [2020-10-14 04:33:22,539 INFO L226 Difference]: Without dead ends: 6040 [2020-10-14 04:33:22,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:33:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-14 04:33:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-14 04:33:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 04:33:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-14 04:33:22,728 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 115 [2020-10-14 04:33:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:33:22,729 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-14 04:33:22,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:33:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-14 04:33:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 04:33:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:33:22,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:22,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:33:22,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:33:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:33:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1639401162, now seen corresponding path program 1 times [2020-10-14 04:33:22,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:33:22,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437268000] [2020-10-14 04:33:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:33:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:23,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:23,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:33:23,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:33:23,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-14 04:33:23,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:23,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:33:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:33:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:33:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:23,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:33:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:23,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:33:23,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:33:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:33:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:33:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:23,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:33:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:24,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:24,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:33:24,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 04:33:24,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:24,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:33:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:33:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:33:24,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437268000] [2020-10-14 04:33:24,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:33:24,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:33:24,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50206674] [2020-10-14 04:33:24,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:33:24,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:33:24,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:33:24,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:33:24,069 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 5 states. [2020-10-14 04:34:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:34:02,078 INFO L93 Difference]: Finished difference Result 17773 states and 24918 transitions. [2020-10-14 04:34:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:34:02,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 04:34:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:34:02,144 INFO L225 Difference]: With dead ends: 17773 [2020-10-14 04:34:02,149 INFO L226 Difference]: Without dead ends: 11755 [2020-10-14 04:34:02,166 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 04:34:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11755 states. [2020-10-14 04:34:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11755 to 11708. [2020-10-14 04:34:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11708 states. [2020-10-14 04:34:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 15126 transitions. [2020-10-14 04:34:02,492 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 15126 transitions. Word has length 115 [2020-10-14 04:34:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:34:02,497 INFO L479 AbstractCegarLoop]: Abstraction has 11708 states and 15126 transitions. [2020-10-14 04:34:02,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:34:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 15126 transitions. [2020-10-14 04:34:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 04:34:02,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:34:02,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:02,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:34:02,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:34:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:34:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1612454429, now seen corresponding path program 1 times [2020-10-14 04:34:02,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:34:02,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650209395] [2020-10-14 04:34:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:34:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:34:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:34:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-14 04:34:03,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:03,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:34:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:34:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:34:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:34:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:03,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:34:03,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:34:03,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:03,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:34:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:34:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:34:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:03,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:03,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:34:03,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:34:03,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:03,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:34:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:34:03,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:34:03,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650209395] [2020-10-14 04:34:03,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:34:03,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:34:03,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781181343] [2020-10-14 04:34:03,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:34:03,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:34:03,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:34:03,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:34:03,646 INFO L87 Difference]: Start difference. First operand 11708 states and 15126 transitions. Second operand 5 states. [2020-10-14 04:34:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:34:46,885 INFO L93 Difference]: Finished difference Result 29064 states and 38879 transitions. [2020-10-14 04:34:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:34:46,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-14 04:34:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:34:46,969 INFO L225 Difference]: With dead ends: 29064 [2020-10-14 04:34:46,969 INFO L226 Difference]: Without dead ends: 17362 [2020-10-14 04:34:46,998 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 04:34:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17362 states. [2020-10-14 04:34:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17362 to 17336. [2020-10-14 04:34:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17336 states. [2020-10-14 04:34:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17336 states to 17336 states and 21638 transitions. [2020-10-14 04:34:47,511 INFO L78 Accepts]: Start accepts. Automaton has 17336 states and 21638 transitions. Word has length 123 [2020-10-14 04:34:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:34:47,513 INFO L479 AbstractCegarLoop]: Abstraction has 17336 states and 21638 transitions. [2020-10-14 04:34:47,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:34:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17336 states and 21638 transitions. [2020-10-14 04:34:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 04:34:47,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:34:47,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:47,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:34:47,519 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:34:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:34:47,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1765803791, now seen corresponding path program 1 times [2020-10-14 04:34:47,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:34:47,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318122222] [2020-10-14 04:34:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:34:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:49,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:49,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 04:34:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:34:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2230 [2020-10-14 04:34:49,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:49,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:34:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 04:34:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 04:34:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:34:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:49,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:34:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:34:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:49,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:34:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:34:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:34:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:34:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:50,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:50,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:34:50,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:34:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:50,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:34:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:34:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:34:50,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318122222] [2020-10-14 04:34:50,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:34:50,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:34:50,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115350042] [2020-10-14 04:34:50,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:34:50,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:34:50,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:34:50,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:34:50,229 INFO L87 Difference]: Start difference. First operand 17336 states and 21638 transitions. Second operand 5 states. [2020-10-14 04:35:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:35:54,222 INFO L93 Difference]: Finished difference Result 43170 states and 55318 transitions. [2020-10-14 04:35:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:35:54,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-14 04:35:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:35:54,333 INFO L225 Difference]: With dead ends: 43170 [2020-10-14 04:35:54,333 INFO L226 Difference]: Without dead ends: 25840 [2020-10-14 04:35:54,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:35:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25840 states. [2020-10-14 04:35:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25840 to 25777. [2020-10-14 04:35:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25777 states. [2020-10-14 04:35:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25777 states to 25777 states and 31599 transitions. [2020-10-14 04:35:55,129 INFO L78 Accepts]: Start accepts. Automaton has 25777 states and 31599 transitions. Word has length 162 [2020-10-14 04:35:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:35:55,130 INFO L479 AbstractCegarLoop]: Abstraction has 25777 states and 31599 transitions. [2020-10-14 04:35:55,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:35:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 25777 states and 31599 transitions. [2020-10-14 04:35:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 04:35:55,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:35:55,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:35:55,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:35:55,135 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:35:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:35:55,136 INFO L82 PathProgramCache]: Analyzing trace with hash 371064449, now seen corresponding path program 1 times [2020-10-14 04:35:55,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:35:55,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026105144] [2020-10-14 04:35:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:35:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:55,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:00,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:00,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 04:36:00,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:36:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 04:36:00,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:00,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:36:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:36:00,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:00,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:00,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:36:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:00,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:00,566 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-14 04:36:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:36:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:36:00,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:00,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:36:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 04:36:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:00,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:00,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:36:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 04:36:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:00,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:36:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:36:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:36:01,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026105144] [2020-10-14 04:36:01,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:36:01,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:36:01,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848142619] [2020-10-14 04:36:01,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:36:01,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:01,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:36:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:36:01,006 INFO L87 Difference]: Start difference. First operand 25777 states and 31599 transitions. Second operand 7 states.