/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/Problem17_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:56:20,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:56:20,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:56:20,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:56:20,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:56:20,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:56:20,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:56:20,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:56:20,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:56:20,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:56:20,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:56:20,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:56:20,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:56:20,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:56:20,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:56:20,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:56:20,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:56:20,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:56:20,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:56:20,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:56:20,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:56:20,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:56:20,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:56:20,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:56:20,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:56:20,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:56:20,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:56:20,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:56:20,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:56:20,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:56:20,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:56:20,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:56:20,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:56:20,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:56:20,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:56:20,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:56:20,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:56:20,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:56:20,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:56:20,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:56:20,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:56:20,366 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 03:56:20,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:56:20,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:56:20,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:56:20,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:56:20,403 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:56:20,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:56:20,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:56:20,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:56:20,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:56:20,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:56:20,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:56:20,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:56:20,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:56:20,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:56:20,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:56:20,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:56:20,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:56:20,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:56:20,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:56:20,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:56:20,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:56:20,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:56:20,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:56:20,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:56:20,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:56:20,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:56:20,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:56:20,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:56:20,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:56:20,409 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 03:56:20,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:56:20,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:56:20,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:56:20,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:56:20,753 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:56:20,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-14 03:56:20,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ee28ae65/904b5072e0fe45f9a15b3e963d8d0716/FLAGb26e7b6e9 [2020-10-14 03:56:21,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:56:21,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-14 03:56:21,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ee28ae65/904b5072e0fe45f9a15b3e963d8d0716/FLAGb26e7b6e9 [2020-10-14 03:56:21,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ee28ae65/904b5072e0fe45f9a15b3e963d8d0716 [2020-10-14 03:56:21,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:56:21,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:56:21,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:56:21,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:56:21,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:56:21,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:56:21" (1/1) ... [2020-10-14 03:56:21,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf6174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:21, skipping insertion in model container [2020-10-14 03:56:21,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:56:21" (1/1) ... [2020-10-14 03:56:21,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:56:21,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:56:23,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:56:23,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:56:23,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:56:23,715 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:56:23,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23 WrapperNode [2020-10-14 03:56:23,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:56:23,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:56:23,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:56:23,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:56:23,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... [2020-10-14 03:56:23,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:56:23,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:56:23,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:56:23,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:56:23,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:56:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:56:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:56:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:56:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:56:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:56:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:56:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:56:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:56:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:56:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:56:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:56:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:56:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:56:30,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:56:30,729 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:56:30,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:56:30 BoogieIcfgContainer [2020-10-14 03:56:30,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:56:30,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:56:30,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:56:30,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:56:30,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:56:21" (1/3) ... [2020-10-14 03:56:30,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6f89d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:56:30, skipping insertion in model container [2020-10-14 03:56:30,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:56:23" (2/3) ... [2020-10-14 03:56:30,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6f89d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:56:30, skipping insertion in model container [2020-10-14 03:56:30,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:56:30" (3/3) ... [2020-10-14 03:56:30,755 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label11.c [2020-10-14 03:56:30,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:56:30,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:56:30,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:56:30,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:56:30,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:56:30,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:56:30,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:56:30,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:56:30,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:56:30,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:56:30,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:56:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:56:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 03:56:30,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:30,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:30,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2087948217, now seen corresponding path program 1 times [2020-10-14 03:56:30,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:30,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217549098] [2020-10-14 03:56:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:31,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:31,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:56:31,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 03:56:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:31,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:56:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:56:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:56:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:56:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:31,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:31,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:31,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 03:56:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:31,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:56:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:31,956 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 03:56:31,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217549098] [2020-10-14 03:56:31,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:56:31,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:56:31,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255785580] [2020-10-14 03:56:31,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:56:31,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:31,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:56:31,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:56:31,987 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:56:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:44,415 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 03:56:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:44,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 03:56:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:44,446 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 03:56:44,447 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 03:56:44,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:56:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 03:56:44,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 03:56:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 03:56:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 03:56:44,588 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 62 [2020-10-14 03:56:44,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:44,592 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 03:56:44,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:56:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 03:56:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 03:56:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:44,600 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, 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] [2020-10-14 03:56:44,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:56:44,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:44,601 INFO L82 PathProgramCache]: Analyzing trace with hash -279306104, now seen corresponding path program 1 times [2020-10-14 03:56:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:44,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068377785] [2020-10-14 03:56:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 03:56:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:56:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-14 03:56:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:56:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:56:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 03:56:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:56:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:56:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:56:46,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:56:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:56:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:56:46,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:46,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:56:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:56:46,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:56:46,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:56:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:56:46,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:56:46,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:56:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:56:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:56:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:56:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:56:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:56:46,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068377785] [2020-10-14 03:56:46,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:56:46,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:56:46,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131679227] [2020-10-14 03:56:46,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:56:46,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:56:46,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:56:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:56:46,537 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 6 states. [2020-10-14 03:56:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:56:59,260 INFO L93 Difference]: Finished difference Result 2427 states and 4006 transitions. [2020-10-14 03:56:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:56:59,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-14 03:56:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:56:59,276 INFO L225 Difference]: With dead ends: 2427 [2020-10-14 03:56:59,276 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 03:56:59,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:56:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 03:56:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1876. [2020-10-14 03:56:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-14 03:56:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 3008 transitions. [2020-10-14 03:56:59,349 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 3008 transitions. Word has length 131 [2020-10-14 03:56:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:56:59,351 INFO L479 AbstractCegarLoop]: Abstraction has 1876 states and 3008 transitions. [2020-10-14 03:56:59,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:56:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 3008 transitions. [2020-10-14 03:56:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 03:56:59,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:56:59,355 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:56:59,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:56:59,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:56:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:56:59,356 INFO L82 PathProgramCache]: Analyzing trace with hash -111436400, now seen corresponding path program 1 times [2020-10-14 03:56:59,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:56:59,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493558790] [2020-10-14 03:56:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:56:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:56:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:56:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:04,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 03:57:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 03:57:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:04,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:57:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 03:57:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:04,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:04,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:04,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:04,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:57:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:04,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:04,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:57:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:04,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:04,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:57:04,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:04,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 03:57:04,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:04,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:57:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:57:04,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493558790] [2020-10-14 03:57:04,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:04,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:04,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146923896] [2020-10-14 03:57:04,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:04,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:04,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:04,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:04,788 INFO L87 Difference]: Start difference. First operand 1876 states and 3008 transitions. Second operand 5 states. [2020-10-14 03:57:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:14,893 INFO L93 Difference]: Finished difference Result 5520 states and 8960 transitions. [2020-10-14 03:57:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:14,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-14 03:57:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:14,920 INFO L225 Difference]: With dead ends: 5520 [2020-10-14 03:57:14,921 INFO L226 Difference]: Without dead ends: 3650 [2020-10-14 03:57:14,928 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 03:57:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2020-10-14 03:57:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3640. [2020-10-14 03:57:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3640 states. [2020-10-14 03:57:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5172 transitions. [2020-10-14 03:57:15,092 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5172 transitions. Word has length 136 [2020-10-14 03:57:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:15,095 INFO L479 AbstractCegarLoop]: Abstraction has 3640 states and 5172 transitions. [2020-10-14 03:57:15,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5172 transitions. [2020-10-14 03:57:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 03:57:15,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:15,111 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, 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] [2020-10-14 03:57:15,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:57:15,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash 185268364, now seen corresponding path program 1 times [2020-10-14 03:57:15,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:15,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433974575] [2020-10-14 03:57:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:15,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:15,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 03:57:15,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 03:57:15,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:15,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:57:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:57:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:57:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:15,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:15,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:15,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:57:15,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:15,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:57:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:15,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:15,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:57:15,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 03:57:15,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:15,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:57:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:57:15,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:57:16,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433974575] [2020-10-14 03:57:16,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:57:16,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:57:16,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552992612] [2020-10-14 03:57:16,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:57:16,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:16,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:57:16,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:57:16,081 INFO L87 Difference]: Start difference. First operand 3640 states and 5172 transitions. Second operand 7 states. [2020-10-14 03:57:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:32,493 INFO L93 Difference]: Finished difference Result 6436 states and 9605 transitions. [2020-10-14 03:57:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:57:32,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-14 03:57:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:32,512 INFO L225 Difference]: With dead ends: 6436 [2020-10-14 03:57:32,513 INFO L226 Difference]: Without dead ends: 2352 [2020-10-14 03:57:32,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:57:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-10-14 03:57:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2324. [2020-10-14 03:57:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2324 states. [2020-10-14 03:57:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3016 transitions. [2020-10-14 03:57:32,598 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3016 transitions. Word has length 138 [2020-10-14 03:57:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:32,599 INFO L479 AbstractCegarLoop]: Abstraction has 2324 states and 3016 transitions. [2020-10-14 03:57:32,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:57:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3016 transitions. [2020-10-14 03:57:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 03:57:32,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:32,603 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, 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, 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 03:57:32,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:57:32,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:32,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1000213135, now seen corresponding path program 1 times [2020-10-14 03:57:32,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:32,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237996190] [2020-10-14 03:57:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:37,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:37,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 03:57:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4545 [2020-10-14 03:57:37,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:37,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:57:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 03:57:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:37,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:37,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:37,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:57:37,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:37,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:37,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:37,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:37,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:57:37,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:37,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:57:37,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:37,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:37,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:37,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:57:37,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 03:57:37,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:37,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:57:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:57:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:57:37,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237996190] [2020-10-14 03:57:37,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:37,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:37,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373837391] [2020-10-14 03:57:37,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:37,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:37,706 INFO L87 Difference]: Start difference. First operand 2324 states and 3016 transitions. Second operand 5 states. [2020-10-14 03:57:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:57:51,001 INFO L93 Difference]: Finished difference Result 5528 states and 7336 transitions. [2020-10-14 03:57:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:57:51,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-14 03:57:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:57:51,021 INFO L225 Difference]: With dead ends: 5528 [2020-10-14 03:57:51,021 INFO L226 Difference]: Without dead ends: 3642 [2020-10-14 03:57:51,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 03:57:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2020-10-14 03:57:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 3640. [2020-10-14 03:57:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3640 states. [2020-10-14 03:57:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4476 transitions. [2020-10-14 03:57:51,116 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4476 transitions. Word has length 224 [2020-10-14 03:57:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:57:51,117 INFO L479 AbstractCegarLoop]: Abstraction has 3640 states and 4476 transitions. [2020-10-14 03:57:51,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:57:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4476 transitions. [2020-10-14 03:57:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 03:57:51,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:57:51,123 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:57:51,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:57:51,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:57:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:57:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1806079972, now seen corresponding path program 1 times [2020-10-14 03:57:51,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:57:51,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254597957] [2020-10-14 03:57:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:57:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 03:57:56,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:57:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 03:57:56,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:57:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 03:57:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 03:57:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:57:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:57:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:57:56,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:57:56,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:57:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:57:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 03:57:56,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:57:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:57:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:57:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:57:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:57:56,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:57:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:57:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:57:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:57:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:57:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 03:57:56,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254597957] [2020-10-14 03:57:56,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:57:56,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:57:56,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758082088] [2020-10-14 03:57:56,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:57:56,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:57:56,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:57:56,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:57:56,557 INFO L87 Difference]: Start difference. First operand 3640 states and 4476 transitions. Second operand 5 states. [2020-10-14 03:58:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:11,792 INFO L93 Difference]: Finished difference Result 9066 states and 11484 transitions. [2020-10-14 03:58:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:11,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-14 03:58:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:11,826 INFO L225 Difference]: With dead ends: 9066 [2020-10-14 03:58:11,827 INFO L226 Difference]: Without dead ends: 5865 [2020-10-14 03:58:11,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 03:58:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5865 states. [2020-10-14 03:58:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5865 to 4986. [2020-10-14 03:58:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4986 states. [2020-10-14 03:58:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 6158 transitions. [2020-10-14 03:58:11,986 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 6158 transitions. Word has length 235 [2020-10-14 03:58:11,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:11,987 INFO L479 AbstractCegarLoop]: Abstraction has 4986 states and 6158 transitions. [2020-10-14 03:58:11,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 6158 transitions. [2020-10-14 03:58:11,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 03:58:11,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:11,992 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:11,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:58:11,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:11,993 INFO L82 PathProgramCache]: Analyzing trace with hash -52543632, now seen corresponding path program 1 times [2020-10-14 03:58:11,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:11,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193987359] [2020-10-14 03:58:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:13,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:13,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 03:58:13,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:58:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1412 [2020-10-14 03:58:13,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:13,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:58:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:58:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:13,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:58:13,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:13,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:13,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:13,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:58:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 03:58:13,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:13,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:58:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:58:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:14,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 03:58:14,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:14,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 03:58:14,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:14,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:14,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:14,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:58:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:58:14,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193987359] [2020-10-14 03:58:14,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:14,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:58:14,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635756278] [2020-10-14 03:58:14,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:58:14,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:58:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:58:14,204 INFO L87 Difference]: Start difference. First operand 4986 states and 6158 transitions. Second operand 8 states. [2020-10-14 03:58:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:27,984 INFO L93 Difference]: Finished difference Result 12224 states and 15653 transitions. [2020-10-14 03:58:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:58:27,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2020-10-14 03:58:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:28,019 INFO L225 Difference]: With dead ends: 12224 [2020-10-14 03:58:28,019 INFO L226 Difference]: Without dead ends: 7212 [2020-10-14 03:58:28,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:58:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2020-10-14 03:58:28,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 6330. [2020-10-14 03:58:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6330 states. [2020-10-14 03:58:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 7644 transitions. [2020-10-14 03:58:28,247 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 7644 transitions. Word has length 241 [2020-10-14 03:58:28,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:28,248 INFO L479 AbstractCegarLoop]: Abstraction has 6330 states and 7644 transitions. [2020-10-14 03:58:28,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:58:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 7644 transitions. [2020-10-14 03:58:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 03:58:28,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:28,256 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:28,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:58:28,256 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -292698216, now seen corresponding path program 1 times [2020-10-14 03:58:28,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:28,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629052908] [2020-10-14 03:58:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:32,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 03:58:32,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:58:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3877 [2020-10-14 03:58:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:32,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-14 03:58:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 03:58:32,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:58:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:32,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:32,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:32,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:58:32,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:58:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:32,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:58:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:32,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:32,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 03:58:32,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 03:58:32,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:32,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 03:58:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 03:58:32,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629052908] [2020-10-14 03:58:32,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:32,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:32,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711269327] [2020-10-14 03:58:32,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:32,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:32,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:32,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:32,861 INFO L87 Difference]: Start difference. First operand 6330 states and 7644 transitions. Second operand 5 states. [2020-10-14 03:58:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:45,299 INFO L93 Difference]: Finished difference Result 13976 states and 16866 transitions. [2020-10-14 03:58:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:45,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-14 03:58:45,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:45,337 INFO L225 Difference]: With dead ends: 13976 [2020-10-14 03:58:45,337 INFO L226 Difference]: Without dead ends: 7652 [2020-10-14 03:58:45,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 03:58:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7652 states. [2020-10-14 03:58:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 7209. [2020-10-14 03:58:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7209 states. [2020-10-14 03:58:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 8652 transitions. [2020-10-14 03:58:45,501 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 8652 transitions. Word has length 290 [2020-10-14 03:58:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:45,502 INFO L479 AbstractCegarLoop]: Abstraction has 7209 states and 8652 transitions. [2020-10-14 03:58:45,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 8652 transitions. [2020-10-14 03:58:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 03:58:45,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:45,513 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:45,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:58:45,513 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash 704711639, now seen corresponding path program 1 times [2020-10-14 03:58:45,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:45,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663881849] [2020-10-14 03:58:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 03:58:49,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:58:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3579 [2020-10-14 03:58:49,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:49,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:58:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:58:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:49,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:49,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:49,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:58:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:49,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:49,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:49,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:58:49,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 03:58:49,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:49,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:58:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:49,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:58:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:49,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:49,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:58:49,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 03:58:49,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:49,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:58:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 03:58:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:50,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:50,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:58:50,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:58:50,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:50,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 03:58:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:50,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 253 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 03:58:50,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663881849] [2020-10-14 03:58:50,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:50,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:58:50,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001093591] [2020-10-14 03:58:50,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:58:50,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:50,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:58:50,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:58:50,900 INFO L87 Difference]: Start difference. First operand 7209 states and 8652 transitions. Second operand 7 states. [2020-10-14 03:59:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:06,962 INFO L93 Difference]: Finished difference Result 15419 states and 18564 transitions. [2020-10-14 03:59:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:59:06,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 03:59:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:06,990 INFO L225 Difference]: With dead ends: 15419 [2020-10-14 03:59:06,990 INFO L226 Difference]: Without dead ends: 8216 [2020-10-14 03:59:07,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:59:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8216 states. [2020-10-14 03:59:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8216 to 8181. [2020-10-14 03:59:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8181 states. [2020-10-14 03:59:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 9832 transitions. [2020-10-14 03:59:07,166 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 9832 transitions. Word has length 329 [2020-10-14 03:59:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:07,167 INFO L479 AbstractCegarLoop]: Abstraction has 8181 states and 9832 transitions. [2020-10-14 03:59:07,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:59:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 9832 transitions. [2020-10-14 03:59:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-14 03:59:07,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:07,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:07,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:59:07,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:07,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1727574482, now seen corresponding path program 1 times [2020-10-14 03:59:07,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:07,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261036011] [2020-10-14 03:59:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:09,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:09,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-14 03:59:09,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:59:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-14 03:59:09,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:09,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:09,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:09,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:59:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 03:59:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:59:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:09,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:09,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:09,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:59:09,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:09,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:59:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:09,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:09,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:09,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 03:59:09,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:09,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:59:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:09,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:10,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 03:59:10,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-14 03:59:10,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:10,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 03:59:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:59:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 03:59:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:10,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:10,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:59:10,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 03:59:10,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:10,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 03:59:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 03:59:10,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261036011] [2020-10-14 03:59:10,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:10,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:59:10,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897926283] [2020-10-14 03:59:10,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:59:10,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:10,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:59:10,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:59:10,547 INFO L87 Difference]: Start difference. First operand 8181 states and 9832 transitions. Second operand 6 states. [2020-10-14 03:59:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:19,563 INFO L93 Difference]: Finished difference Result 16348 states and 19691 transitions. [2020-10-14 03:59:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:19,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 355 [2020-10-14 03:59:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:19,606 INFO L225 Difference]: With dead ends: 16348 [2020-10-14 03:59:19,606 INFO L226 Difference]: Without dead ends: 8172 [2020-10-14 03:59:19,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2020-10-14 03:59:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 8159. [2020-10-14 03:59:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8159 states. [2020-10-14 03:59:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8159 states to 8159 states and 9783 transitions. [2020-10-14 03:59:19,841 INFO L78 Accepts]: Start accepts. Automaton has 8159 states and 9783 transitions. Word has length 355 [2020-10-14 03:59:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:19,842 INFO L479 AbstractCegarLoop]: Abstraction has 8159 states and 9783 transitions. [2020-10-14 03:59:19,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:59:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8159 states and 9783 transitions. [2020-10-14 03:59:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-14 03:59:19,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:19,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:19,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:59:19,861 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:19,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1140424136, now seen corresponding path program 1 times [2020-10-14 03:59:19,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:19,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709471501] [2020-10-14 03:59:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-14 03:59:25,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:59:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 03:59:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-14 03:59:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:59:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:25,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:25,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:25,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:25,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:59:25,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:59:25,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:59:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:59:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 03:59:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:59:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 03:59:25,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709471501] [2020-10-14 03:59:25,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:25,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:25,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692529192] [2020-10-14 03:59:25,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:25,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:25,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:25,631 INFO L87 Difference]: Start difference. First operand 8159 states and 9783 transitions. Second operand 7 states. [2020-10-14 03:59:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:45,560 INFO L93 Difference]: Finished difference Result 21883 states and 27158 transitions. [2020-10-14 03:59:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:59:45,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-14 03:59:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:45,616 INFO L225 Difference]: With dead ends: 21883 [2020-10-14 03:59:45,616 INFO L226 Difference]: Without dead ends: 13730 [2020-10-14 03:59:45,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:59:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13730 states. [2020-10-14 03:59:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13730 to 13611. [2020-10-14 03:59:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13611 states. [2020-10-14 03:59:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 16558 transitions. [2020-10-14 03:59:45,934 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 16558 transitions. Word has length 385 [2020-10-14 03:59:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:45,935 INFO L479 AbstractCegarLoop]: Abstraction has 13611 states and 16558 transitions. [2020-10-14 03:59:45,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:59:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 16558 transitions. [2020-10-14 03:59:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-14 03:59:45,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:45,950 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:45,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:59:45,951 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:45,952 INFO L82 PathProgramCache]: Analyzing trace with hash 88581448, now seen corresponding path program 1 times [2020-10-14 03:59:45,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:45,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168176824] [2020-10-14 03:59:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:51,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:51,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-14 03:59:51,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:59:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 03:59:51,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:51,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 03:59:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:59:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-14 03:59:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:51,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:51,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:51,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:51,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:51,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:51,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:59:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:51,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:59:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:51,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:51,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 03:59:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 03:59:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:59:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:59:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 209 proven. 123 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:59:52,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168176824] [2020-10-14 03:59:52,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:52,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 03:59:52,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389947221] [2020-10-14 03:59:52,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 03:59:52,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:52,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 03:59:52,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:59:52,188 INFO L87 Difference]: Start difference. First operand 13611 states and 16558 transitions. Second operand 10 states. [2020-10-14 03:59:54,200 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-14 03:59:57,841 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41