/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=NARROWEST --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/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:21:36,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:21:36,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:21:36,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:21:36,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:21:36,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:21:36,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:21:36,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:21:36,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:21:36,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:21:36,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:21:36,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:21:36,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:21:36,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:21:36,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:21:36,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:21:36,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:21:36,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:21:36,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:21:36,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:21:36,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:21:36,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:21:36,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:21:36,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:21:36,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:21:36,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:21:36,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:21:36,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:21:36,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:21:36,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:21:36,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:21:36,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:21:36,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:21:36,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:21:36,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:21:36,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:21:36,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:21:36,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:21:36,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:21:36,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:21:36,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:21:36,769 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 [2020-10-13 08:21:36,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:21:36,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:21:36,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:21:36,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:21:36,822 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:21:36,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:21:36,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:21:36,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:21:36,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:21:36,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:21:36,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:21:36,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:21:36,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:21:36,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:21:36,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:21:36,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:21:36,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:21:36,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:21:36,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:21:36,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:21:36,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:21:36,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:21:36,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:21:36,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:21:36,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:21:36,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:21:36,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:21:36,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:21:36,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:21:36,829 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:21:37,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:21:37,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:21:37,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:21:37,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:21:37,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:21:37,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-13 08:21:37,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/550dd7ab7/7d089d2b463c43dd962c9d8025e24f2f/FLAGeb0bf5ad8 [2020-10-13 08:21:38,170 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:21:38,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-13 08:21:38,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/550dd7ab7/7d089d2b463c43dd962c9d8025e24f2f/FLAGeb0bf5ad8 [2020-10-13 08:21:38,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/550dd7ab7/7d089d2b463c43dd962c9d8025e24f2f [2020-10-13 08:21:38,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:21:38,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:21:38,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:21:38,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:21:38,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:21:38,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:21:38" (1/1) ... [2020-10-13 08:21:38,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1c55bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:38, skipping insertion in model container [2020-10-13 08:21:38,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:21:38" (1/1) ... [2020-10-13 08:21:38,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:21:38,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:21:40,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:21:40,480 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:21:41,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:21:41,323 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:21:41,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41 WrapperNode [2020-10-13 08:21:41,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:21:41,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:21:41,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:21:41,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:21:41,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (1/1) ... [2020-10-13 08:21:41,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:21:41,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:21:41,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:21:41,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:21:41,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (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 [2020-10-13 08:21:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:21:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:21:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:21:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:21:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:21:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:21:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:21:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:21:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:21:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:21:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:21:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:21:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:21:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:21:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:21:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:21:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:21:46,736 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:21:46,737 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:21:46,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:21:46 BoogieIcfgContainer [2020-10-13 08:21:46,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:21:46,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:21:46,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:21:46,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:21:46,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:21:38" (1/3) ... [2020-10-13 08:21:46,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9388e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:21:46, skipping insertion in model container [2020-10-13 08:21:46,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:41" (2/3) ... [2020-10-13 08:21:46,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9388e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:21:46, skipping insertion in model container [2020-10-13 08:21:46,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:21:46" (3/3) ... [2020-10-13 08:21:46,772 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2020-10-13 08:21:46,784 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:21:46,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:21:46,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:21:46,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:21:46,842 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:21:46,842 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:21:46,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:21:46,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:21:46,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:21:46,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:21:46,843 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:21:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:21:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 08:21:46,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:46,893 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:46,893 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash -593043574, now seen corresponding path program 1 times [2020-10-13 08:21:46,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:46,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695836155] [2020-10-13 08:21:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:21:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-13 08:21:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:21:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:21:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:21:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:21:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:47,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:47,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:47,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:47,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:21:47,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:21:47,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:47,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695836155] [2020-10-13 08:21:47,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:21:47,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:21:47,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779113943] [2020-10-13 08:21:47,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:47,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:47,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:47,881 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:22:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:00,844 INFO L93 Difference]: Finished difference Result 3253 states and 6292 transitions. [2020-10-13 08:22:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:22:00,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 08:22:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:00,890 INFO L225 Difference]: With dead ends: 3253 [2020-10-13 08:22:00,890 INFO L226 Difference]: Without dead ends: 2346 [2020-10-13 08:22:00,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:22:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-13 08:22:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-13 08:22:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-13 08:22:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 4145 transitions. [2020-10-13 08:22:01,138 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 4145 transitions. Word has length 69 [2020-10-13 08:22:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:01,139 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 4145 transitions. [2020-10-13 08:22:01,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 4145 transitions. [2020-10-13 08:22:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 08:22:01,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:01,148 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, 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] [2020-10-13 08:22:01,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:22:01,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 198959659, now seen corresponding path program 1 times [2020-10-13 08:22:01,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:01,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372511194] [2020-10-13 08:22:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:02,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 08:22:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:22:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-13 08:22:02,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:22:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:22:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:03,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:03,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:22:03,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:03,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:03,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:22:03,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:22:03,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:22:03,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:03,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372511194] [2020-10-13 08:22:03,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:03,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:03,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491323251] [2020-10-13 08:22:03,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:03,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:03,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:03,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:03,347 INFO L87 Difference]: Start difference. First operand 2331 states and 4145 transitions. Second operand 5 states. [2020-10-13 08:22:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:13,733 INFO L93 Difference]: Finished difference Result 7006 states and 12592 transitions. [2020-10-13 08:22:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:13,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 08:22:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:13,765 INFO L225 Difference]: With dead ends: 7006 [2020-10-13 08:22:13,766 INFO L226 Difference]: Without dead ends: 4681 [2020-10-13 08:22:13,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-13 08:22:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4664. [2020-10-13 08:22:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-10-13 08:22:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 7237 transitions. [2020-10-13 08:22:13,971 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 7237 transitions. Word has length 148 [2020-10-13 08:22:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:13,974 INFO L479 AbstractCegarLoop]: Abstraction has 4664 states and 7237 transitions. [2020-10-13 08:22:13,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 7237 transitions. [2020-10-13 08:22:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 08:22:13,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:13,995 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, 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] [2020-10-13 08:22:13,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:22:13,996 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:14,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1887647610, now seen corresponding path program 1 times [2020-10-13 08:22:14,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:14,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88332514] [2020-10-13 08:22:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:14,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:15,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:15,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 08:22:15,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-13 08:22:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:22:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:22:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:15,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:15,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:15,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:15,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:22:15,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:15,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:22:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:22:15,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:22:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:15,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88332514] [2020-10-13 08:22:15,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:15,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:15,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38862352] [2020-10-13 08:22:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:15,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:15,410 INFO L87 Difference]: Start difference. First operand 4664 states and 7237 transitions. Second operand 5 states. [2020-10-13 08:22:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:24,299 INFO L93 Difference]: Finished difference Result 13991 states and 22088 transitions. [2020-10-13 08:22:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:24,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 08:22:24,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:24,358 INFO L225 Difference]: With dead ends: 13991 [2020-10-13 08:22:24,358 INFO L226 Difference]: Without dead ends: 9333 [2020-10-13 08:22:24,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-10-13 08:22:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 8562. [2020-10-13 08:22:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8562 states. [2020-10-13 08:22:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 11816 transitions. [2020-10-13 08:22:24,621 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 11816 transitions. Word has length 149 [2020-10-13 08:22:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:24,625 INFO L479 AbstractCegarLoop]: Abstraction has 8562 states and 11816 transitions. [2020-10-13 08:22:24,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 11816 transitions. [2020-10-13 08:22:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:22:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:24,631 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, 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] [2020-10-13 08:22:24,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:22:24,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1242566363, now seen corresponding path program 1 times [2020-10-13 08:22:24,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:24,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538529025] [2020-10-13 08:22:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:25,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:25,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:22:25,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-10-13 08:22:25,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:22:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:22:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:25,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:25,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:22:25,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:25,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:25,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:25,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:22:25,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:22:25,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:22:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:25,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538529025] [2020-10-13 08:22:25,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:25,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:25,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070227761] [2020-10-13 08:22:25,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:25,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:25,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:25,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:25,958 INFO L87 Difference]: Start difference. First operand 8562 states and 11816 transitions. Second operand 5 states. [2020-10-13 08:22:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:36,578 INFO L93 Difference]: Finished difference Result 21775 states and 31479 transitions. [2020-10-13 08:22:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:36,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:22:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:36,648 INFO L225 Difference]: With dead ends: 21775 [2020-10-13 08:22:36,648 INFO L226 Difference]: Without dead ends: 13219 [2020-10-13 08:22:36,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2020-10-13 08:22:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13215. [2020-10-13 08:22:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-13 08:22:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 18580 transitions. [2020-10-13 08:22:37,036 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 18580 transitions. Word has length 172 [2020-10-13 08:22:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:37,037 INFO L479 AbstractCegarLoop]: Abstraction has 13215 states and 18580 transitions. [2020-10-13 08:22:37,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 18580 transitions. [2020-10-13 08:22:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 08:22:37,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:37,043 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:37,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:22:37,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:37,044 INFO L82 PathProgramCache]: Analyzing trace with hash 609681915, now seen corresponding path program 1 times [2020-10-13 08:22:37,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:37,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274047323] [2020-10-13 08:22:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:37,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:38,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:38,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 08:22:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:22:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-13 08:22:38,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:22:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:22:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:38,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:38,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:38,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:38,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:22:38,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:38,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:38,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:22:38,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:22:38,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:22:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:38,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274047323] [2020-10-13 08:22:38,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:38,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:38,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687196889] [2020-10-13 08:22:38,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:38,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:38,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:38,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:38,559 INFO L87 Difference]: Start difference. First operand 13215 states and 18580 transitions. Second operand 5 states. [2020-10-13 08:22:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:53,245 INFO L93 Difference]: Finished difference Result 32646 states and 48059 transitions. [2020-10-13 08:22:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:53,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-13 08:22:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:53,344 INFO L225 Difference]: With dead ends: 32646 [2020-10-13 08:22:53,345 INFO L226 Difference]: Without dead ends: 19437 [2020-10-13 08:22:53,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19437 states. [2020-10-13 08:22:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19437 to 19429. [2020-10-13 08:22:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19429 states. [2020-10-13 08:22:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19429 states to 19429 states and 26675 transitions. [2020-10-13 08:22:54,015 INFO L78 Accepts]: Start accepts. Automaton has 19429 states and 26675 transitions. Word has length 188 [2020-10-13 08:22:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:54,015 INFO L479 AbstractCegarLoop]: Abstraction has 19429 states and 26675 transitions. [2020-10-13 08:22:54,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 19429 states and 26675 transitions. [2020-10-13 08:22:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 08:22:54,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:54,024 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, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:22:54,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:22:54,025 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash 838761430, now seen corresponding path program 1 times [2020-10-13 08:22:54,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:54,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354319341] [2020-10-13 08:22:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:56,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:56,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 08:22:56,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:22:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2136 [2020-10-13 08:22:56,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:56,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:22:56,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:22:56,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:22:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:56,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:22:56,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:22:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:22:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:22:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:56,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:56,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:22:56,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:56,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-13 08:22:56,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:22:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:22:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:22:56,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354319341] [2020-10-13 08:22:56,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:56,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:22:56,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439279830] [2020-10-13 08:22:56,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:22:56,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:56,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:22:56,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:22:56,810 INFO L87 Difference]: Start difference. First operand 19429 states and 26675 transitions. Second operand 7 states. [2020-10-13 08:23:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:16,636 INFO L93 Difference]: Finished difference Result 57964 states and 84718 transitions. [2020-10-13 08:23:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:23:16,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-13 08:23:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:16,819 INFO L225 Difference]: With dead ends: 57964 [2020-10-13 08:23:16,819 INFO L226 Difference]: Without dead ends: 38475 [2020-10-13 08:23:16,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:23:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38475 states. [2020-10-13 08:23:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38475 to 36820. [2020-10-13 08:23:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36820 states. [2020-10-13 08:23:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36820 states to 36820 states and 48953 transitions. [2020-10-13 08:23:17,697 INFO L78 Accepts]: Start accepts. Automaton has 36820 states and 48953 transitions. Word has length 225 [2020-10-13 08:23:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:17,697 INFO L479 AbstractCegarLoop]: Abstraction has 36820 states and 48953 transitions. [2020-10-13 08:23:17,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:23:17,697 INFO L276 IsEmpty]: Start isEmpty. Operand 36820 states and 48953 transitions. [2020-10-13 08:23:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-13 08:23:17,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:17,716 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:17,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:23:17,716 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:17,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1518465418, now seen corresponding path program 1 times [2020-10-13 08:23:17,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:17,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824231631] [2020-10-13 08:23:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:22,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:22,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 08:23:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:23:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4967 [2020-10-13 08:23:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-13 08:23:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:23:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:22,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:22,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:23:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:22,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:23,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:23:23,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:23,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:23:23,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 08:23:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 08:23:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:23:23,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 08:23:23,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:23:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:23:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:23:23,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824231631] [2020-10-13 08:23:23,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:23,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:23:23,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828039058] [2020-10-13 08:23:23,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:23:23,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:23:23,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:23:23,578 INFO L87 Difference]: Start difference. First operand 36820 states and 48953 transitions. Second operand 7 states. [2020-10-13 08:23:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:44,507 INFO L93 Difference]: Finished difference Result 93223 states and 135201 transitions. [2020-10-13 08:23:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:23:44,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-13 08:23:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:44,772 INFO L225 Difference]: With dead ends: 93223 [2020-10-13 08:23:44,772 INFO L226 Difference]: Without dead ends: 56390 [2020-10-13 08:23:44,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:23:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56390 states. [2020-10-13 08:23:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56390 to 56116. [2020-10-13 08:23:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56116 states. [2020-10-13 08:23:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56116 states to 56116 states and 76666 transitions. [2020-10-13 08:23:46,172 INFO L78 Accepts]: Start accepts. Automaton has 56116 states and 76666 transitions. Word has length 273 [2020-10-13 08:23:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:46,172 INFO L479 AbstractCegarLoop]: Abstraction has 56116 states and 76666 transitions. [2020-10-13 08:23:46,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:23:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 56116 states and 76666 transitions. [2020-10-13 08:23:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 08:23:46,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:46,196 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:46,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:23:46,196 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:46,197 INFO L82 PathProgramCache]: Analyzing trace with hash 217821442, now seen corresponding path program 1 times [2020-10-13 08:23:46,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:46,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643193369] [2020-10-13 08:23:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-13 08:23:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:23:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:51,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:51,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:23:51,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:51,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:23:51,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 08:23:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 08:23:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 08:23:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:52,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:52,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:23:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-13 08:23:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:23:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:23:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:23:52,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643193369] [2020-10-13 08:23:52,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:52,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:23:52,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509909355] [2020-10-13 08:23:52,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:23:52,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:52,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:23:52,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:23:52,377 INFO L87 Difference]: Start difference. First operand 56116 states and 76666 transitions. Second operand 7 states. [2020-10-13 08:24:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:19,539 INFO L93 Difference]: Finished difference Result 77550 states and 112101 transitions. [2020-10-13 08:24:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:24:19,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-13 08:24:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:19,733 INFO L225 Difference]: With dead ends: 77550 [2020-10-13 08:24:19,733 INFO L226 Difference]: Without dead ends: 56381 [2020-10-13 08:24:19,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:24:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56381 states. [2020-10-13 08:24:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56381 to 56111. [2020-10-13 08:24:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56111 states. [2020-10-13 08:24:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56111 states to 56111 states and 76522 transitions. [2020-10-13 08:24:21,026 INFO L78 Accepts]: Start accepts. Automaton has 56111 states and 76522 transitions. Word has length 283 [2020-10-13 08:24:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:21,026 INFO L479 AbstractCegarLoop]: Abstraction has 56111 states and 76522 transitions. [2020-10-13 08:24:21,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:24:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56111 states and 76522 transitions. [2020-10-13 08:24:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 08:24:21,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:21,050 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:21,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:24:21,050 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:21,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1850619539, now seen corresponding path program 1 times [2020-10-13 08:24:21,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:21,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680851995] [2020-10-13 08:24:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:26,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:26,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 08:24:26,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:24:26,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 08:24:26,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:24:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-13 08:24:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:24:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:24:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:26,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:26,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:24:26,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 08:24:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 08:24:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:24:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 08:24:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:26,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:26,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:24:26,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:26,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-13 08:24:26,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:26,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:24:26,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:26,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:24:26,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:27,223 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-13 08:24:27,390 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 08:24:27,558 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 08:24:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:24:27,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680851995] [2020-10-13 08:24:27,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:27,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:24:27,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357598007] [2020-10-13 08:24:27,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:24:27,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:27,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:24:27,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:24:27,837 INFO L87 Difference]: Start difference. First operand 56111 states and 76522 transitions. Second operand 10 states. [2020-10-13 08:24:28,415 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-13 08:24:28,743 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-13 08:24:29,187 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-13 08:24:29,362 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-10-13 08:24:29,523 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-13 08:24:31,769 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-13 08:24:32,351 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-13 08:24:33,191 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-13 08:24:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:46,915 INFO L93 Difference]: Finished difference Result 78517 states and 111714 transitions. [2020-10-13 08:24:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:24:46,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 294 [2020-10-13 08:24:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:47,084 INFO L225 Difference]: With dead ends: 78517 [2020-10-13 08:24:47,084 INFO L226 Difference]: Without dead ends: 58059 [2020-10-13 08:24:47,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-10-13 08:24:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58059 states. [2020-10-13 08:24:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58059 to 56322. [2020-10-13 08:24:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56322 states. [2020-10-13 08:24:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56322 states to 56322 states and 77445 transitions. [2020-10-13 08:24:48,294 INFO L78 Accepts]: Start accepts. Automaton has 56322 states and 77445 transitions. Word has length 294 [2020-10-13 08:24:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:48,295 INFO L479 AbstractCegarLoop]: Abstraction has 56322 states and 77445 transitions. [2020-10-13 08:24:48,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:24:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand 56322 states and 77445 transitions. [2020-10-13 08:24:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 08:24:48,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:48,320 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:24:48,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:24:48,321 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:48,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:48,321 INFO L82 PathProgramCache]: Analyzing trace with hash -926690514, now seen corresponding path program 1 times [2020-10-13 08:24:48,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:48,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688825676] [2020-10-13 08:24:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 08:24:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:24:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 08:24:53,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:24:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 08:24:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:24:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:53,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:53,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:53,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:53,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:24:53,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:53,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:53,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:24:53,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:53,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:24:53,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:24:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:53,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:53,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:24:53,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:24:53,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:24:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-13 08:24:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:54,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:24:54,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-13 08:24:54,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:24:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:24:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:54,372 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-13 08:24:54,568 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 08:24:54,731 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 08:24:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:24:55,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688825676] [2020-10-13 08:24:55,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:55,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:24:55,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147831524] [2020-10-13 08:24:55,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:24:55,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:55,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:24:55,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:24:55,044 INFO L87 Difference]: Start difference. First operand 56322 states and 77445 transitions. Second operand 10 states. [2020-10-13 08:24:55,632 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-13 08:24:56,022 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-13 08:24:56,604 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-13 08:24:56,870 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-13 08:24:57,098 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-13 08:25:00,384 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-13 08:25:00,855 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-13 08:25:01,853 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-13 08:25:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:16,465 INFO L93 Difference]: Finished difference Result 78512 states and 111555 transitions. [2020-10-13 08:25:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:25:16,468 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 331 [2020-10-13 08:25:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:16,631 INFO L225 Difference]: With dead ends: 78512 [2020-10-13 08:25:16,632 INFO L226 Difference]: Without dead ends: 57889 [2020-10-13 08:25:16,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-10-13 08:25:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57889 states. [2020-10-13 08:25:17,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57889 to 56412. [2020-10-13 08:25:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56412 states. [2020-10-13 08:25:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56412 states to 56412 states and 77764 transitions. [2020-10-13 08:25:17,504 INFO L78 Accepts]: Start accepts. Automaton has 56412 states and 77764 transitions. Word has length 331 [2020-10-13 08:25:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:17,505 INFO L479 AbstractCegarLoop]: Abstraction has 56412 states and 77764 transitions. [2020-10-13 08:25:17,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:25:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand 56412 states and 77764 transitions. [2020-10-13 08:25:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 08:25:17,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:17,526 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, 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, 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] [2020-10-13 08:25:17,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:25:17,526 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:17,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1206062577, now seen corresponding path program 1 times [2020-10-13 08:25:17,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:17,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653702022] [2020-10-13 08:25:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking...