/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem13_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:37:45,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:37:45,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:37:45,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:37:45,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:37:45,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:37:45,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:37:45,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:37:45,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:37:45,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:37:45,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:37:45,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:37:45,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:37:45,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:37:45,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:37:45,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:37:45,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:37:45,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:37:45,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:37:45,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:37:45,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:37:45,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:37:45,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:37:45,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:37:45,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:37:45,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:37:45,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:37:45,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:37:45,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:37:45,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:37:45,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:37:45,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:37:45,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:37:45,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:37:45,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:37:45,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:37:45,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:37:45,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:37:45,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:37:45,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:37:45,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:37:45,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:37:45,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:37:45,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:37:45,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:37:45,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:37:45,854 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:37:45,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:37:45,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:37:45,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:37:45,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:37:45,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:37:45,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:37:45,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:37:45,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:37:45,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:37:45,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:37:45,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:37:45,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:37:45,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:37:45,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:37:45,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:37:45,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:37:45,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:37:45,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:37:45,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:37:45,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:37:45,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:37:45,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:37:45,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:37:45,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:37:45,861 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:37:46,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:37:46,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:37:46,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:37:46,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:37:46,228 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:37:46,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-14 21:37:46,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2cd03078/9bceda4e46014492a4a5eb94053c4bb3/FLAG1ccc07518 [2020-10-14 21:37:47,067 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:37:47,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-14 21:37:47,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2cd03078/9bceda4e46014492a4a5eb94053c4bb3/FLAG1ccc07518 [2020-10-14 21:37:47,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2cd03078/9bceda4e46014492a4a5eb94053c4bb3 [2020-10-14 21:37:47,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:37:47,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:37:47,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:47,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:37:47,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:37:47,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:47" (1/1) ... [2020-10-14 21:37:47,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b40a169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:47, skipping insertion in model container [2020-10-14 21:37:47,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:47" (1/1) ... [2020-10-14 21:37:47,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:37:47,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:37:49,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:49,722 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:37:50,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:50,522 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:37:50,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50 WrapperNode [2020-10-14 21:37:50,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:50,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:37:50,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:37:50,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:37:50,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... [2020-10-14 21:37:50,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:37:50,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:37:50,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:37:50,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:37:50,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:37:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:37:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:37:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:37:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:37:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:37:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:37:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:37:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:37:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:37:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:37:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:37:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:37:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:37:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:37:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:37:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:37:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:38:04,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:38:04,041 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:38:04,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:04 BoogieIcfgContainer [2020-10-14 21:38:04,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:38:04,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:38:04,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:38:04,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:38:04,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:47" (1/3) ... [2020-10-14 21:38:04,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fca6bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:04, skipping insertion in model container [2020-10-14 21:38:04,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:50" (2/3) ... [2020-10-14 21:38:04,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fca6bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:04, skipping insertion in model container [2020-10-14 21:38:04,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:04" (3/3) ... [2020-10-14 21:38:04,080 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label58.c [2020-10-14 21:38:04,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:38:04,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:38:04,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:38:04,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:38:04,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:38:04,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:38:04,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:38:04,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:38:04,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:38:04,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:38:04,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:38:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:38:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 21:38:04,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:04,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:04,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1431834345, now seen corresponding path program 1 times [2020-10-14 21:38:04,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:04,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675708457] [2020-10-14 21:38:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:04,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:04,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 21:38:04,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-14 21:38:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:04,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 21:38:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:38:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:05,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:05,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:05,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:38:05,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:05,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:05,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675708457] [2020-10-14 21:38:05,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:05,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:38:05,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016249260] [2020-10-14 21:38:05,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:38:05,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:38:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:38:05,074 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:38:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:25,427 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 21:38:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:38:25,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 21:38:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:25,478 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 21:38:25,478 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 21:38:25,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 21:38:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 21:38:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 21:38:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 21:38:25,714 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 18 [2020-10-14 21:38:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:25,716 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 21:38:25,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:38:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 21:38:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 21:38:25,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:25,726 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:38:25,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:38:25,728 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 6915315, now seen corresponding path program 1 times [2020-10-14 21:38:25,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:25,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951815230] [2020-10-14 21:38:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:26,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:26,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:38:26,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-14 21:38:26,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:26,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:38:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:38:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:27,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:27,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:38:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:27,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:38:27,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 21:38:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:27,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:38:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:27,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951815230] [2020-10-14 21:38:27,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:27,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:27,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346161086] [2020-10-14 21:38:27,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:27,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:27,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:27,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:27,654 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-14 21:38:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:58,818 INFO L93 Difference]: Finished difference Result 5681 states and 9487 transitions. [2020-10-14 21:38:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:38:58,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-14 21:38:58,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:58,852 INFO L225 Difference]: With dead ends: 5681 [2020-10-14 21:38:58,853 INFO L226 Difference]: Without dead ends: 3753 [2020-10-14 21:38:58,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:38:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2020-10-14 21:38:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3644. [2020-10-14 21:38:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2020-10-14 21:38:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5458 transitions. [2020-10-14 21:38:59,017 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5458 transitions. Word has length 93 [2020-10-14 21:38:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:59,018 INFO L479 AbstractCegarLoop]: Abstraction has 3644 states and 5458 transitions. [2020-10-14 21:38:59,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5458 transitions. [2020-10-14 21:38:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 21:38:59,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:59,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:59,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:38:59,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1205149463, now seen corresponding path program 1 times [2020-10-14 21:38:59,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:59,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3035435] [2020-10-14 21:38:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:39:00,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-14 21:39:00,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:39:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:39:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:39:00,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:00,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:39:00,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 21:39:00,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:39:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:39:00,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3035435] [2020-10-14 21:39:00,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:39:00,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:39:00,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329390956] [2020-10-14 21:39:00,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:00,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:00,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:00,908 INFO L87 Difference]: Start difference. First operand 3644 states and 5458 transitions. Second operand 7 states. [2020-10-14 21:39:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:22,181 INFO L93 Difference]: Finished difference Result 10835 states and 16688 transitions. [2020-10-14 21:39:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:39:22,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-14 21:39:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:22,227 INFO L225 Difference]: With dead ends: 10835 [2020-10-14 21:39:22,227 INFO L226 Difference]: Without dead ends: 7197 [2020-10-14 21:39:22,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7197 states. [2020-10-14 21:39:22,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7197 to 7099. [2020-10-14 21:39:22,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7099 states. [2020-10-14 21:39:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 9717 transitions. [2020-10-14 21:39:22,606 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 9717 transitions. Word has length 107 [2020-10-14 21:39:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:22,610 INFO L479 AbstractCegarLoop]: Abstraction has 7099 states and 9717 transitions. [2020-10-14 21:39:22,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 9717 transitions. [2020-10-14 21:39:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 21:39:22,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:22,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:39:22,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:39:22,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:22,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1691765513, now seen corresponding path program 1 times [2020-10-14 21:39:22,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:22,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610617157] [2020-10-14 21:39:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 21:39:23,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-14 21:39:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:39:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:39:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:23,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:23,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:39:23,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:23,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:23,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:24,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:39:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 21:39:24,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:24,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:39:24,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:39:24,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610617157] [2020-10-14 21:39:24,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:39:24,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:39:24,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133194040] [2020-10-14 21:39:24,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:24,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:24,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:24,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:24,258 INFO L87 Difference]: Start difference. First operand 7099 states and 9717 transitions. Second operand 7 states. [2020-10-14 21:39:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:46,959 INFO L93 Difference]: Finished difference Result 21490 states and 30663 transitions. [2020-10-14 21:39:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:39:46,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-14 21:39:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:47,042 INFO L225 Difference]: With dead ends: 21490 [2020-10-14 21:39:47,043 INFO L226 Difference]: Without dead ends: 14397 [2020-10-14 21:39:47,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14397 states. [2020-10-14 21:39:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14397 to 13349. [2020-10-14 21:39:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13349 states. [2020-10-14 21:39:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 17453 transitions. [2020-10-14 21:39:47,457 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 17453 transitions. Word has length 123 [2020-10-14 21:39:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:47,459 INFO L479 AbstractCegarLoop]: Abstraction has 13349 states and 17453 transitions. [2020-10-14 21:39:47,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 17453 transitions. [2020-10-14 21:39:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 21:39:47,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:47,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:39:47,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:39:47,472 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2087810757, now seen corresponding path program 1 times [2020-10-14 21:39:47,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:47,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745412639] [2020-10-14 21:39:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 21:39:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:39:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3375 [2020-10-14 21:39:50,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:50,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:39:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:39:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:51,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:39:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:39:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:39:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:39:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:51,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:39:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 21:39:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:39:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:51,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:51,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:39:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 21:39:51,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:51,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:39:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:39:51,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745412639] [2020-10-14 21:39:51,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:51,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:51,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813349852] [2020-10-14 21:39:51,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:51,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:51,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:51,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:51,846 INFO L87 Difference]: Start difference. First operand 13349 states and 17453 transitions. Second operand 7 states. [2020-10-14 21:40:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:21,201 INFO L93 Difference]: Finished difference Result 39958 states and 56212 transitions. [2020-10-14 21:40:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:40:21,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-14 21:40:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:21,333 INFO L225 Difference]: With dead ends: 39958 [2020-10-14 21:40:21,333 INFO L226 Difference]: Without dead ends: 26615 [2020-10-14 21:40:21,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:40:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26615 states. [2020-10-14 21:40:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26615 to 26222. [2020-10-14 21:40:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26222 states. [2020-10-14 21:40:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26222 states to 26222 states and 35965 transitions. [2020-10-14 21:40:23,250 INFO L78 Accepts]: Start accepts. Automaton has 26222 states and 35965 transitions. Word has length 218 [2020-10-14 21:40:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:23,252 INFO L479 AbstractCegarLoop]: Abstraction has 26222 states and 35965 transitions. [2020-10-14 21:40:23,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:40:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 26222 states and 35965 transitions. [2020-10-14 21:40:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 21:40:23,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:23,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:40:23,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:40:23,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:23,260 INFO L82 PathProgramCache]: Analyzing trace with hash -611664763, now seen corresponding path program 1 times [2020-10-14 21:40:23,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:23,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387689423] [2020-10-14 21:40:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:28,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:28,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 21:40:28,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:40:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 21:40:28,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:28,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:40:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 21:40:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:40:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:28,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:28,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:40:28,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:28,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:28,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:40:28,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 21:40:28,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:28,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:40:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:40:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 21:40:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:28,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:28,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:28,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:40:28,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:40:28,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:28,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:40:28,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:40:29,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387689423] [2020-10-14 21:40:29,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:29,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:40:29,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37405020] [2020-10-14 21:40:29,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:40:29,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:29,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:40:29,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:40:29,006 INFO L87 Difference]: Start difference. First operand 26222 states and 35965 transitions. Second operand 6 states. [2020-10-14 21:40:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:49,892 INFO L93 Difference]: Finished difference Result 52444 states and 71966 transitions. [2020-10-14 21:40:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:40:49,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 227 [2020-10-14 21:40:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:50,007 INFO L225 Difference]: With dead ends: 52444 [2020-10-14 21:40:50,007 INFO L226 Difference]: Without dead ends: 26228 [2020-10-14 21:40:50,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26228 states. [2020-10-14 21:40:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26228 to 26222. [2020-10-14 21:40:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26222 states. [2020-10-14 21:40:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26222 states to 26222 states and 33520 transitions. [2020-10-14 21:40:50,714 INFO L78 Accepts]: Start accepts. Automaton has 26222 states and 33520 transitions. Word has length 227 [2020-10-14 21:40:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:50,715 INFO L479 AbstractCegarLoop]: Abstraction has 26222 states and 33520 transitions. [2020-10-14 21:40:50,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:40:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 26222 states and 33520 transitions. [2020-10-14 21:40:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 21:40:50,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:50,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:40:50,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:40:50,722 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1794111763, now seen corresponding path program 1 times [2020-10-14 21:40:50,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:50,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204128126] [2020-10-14 21:40:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 21:40:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:40:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5211 [2020-10-14 21:40:55,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:55,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:40:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:40:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:40:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:56,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:56,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:56,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:40:56,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:56,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:40:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:40:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:40:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:40:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:56,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:40:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:40:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 21:40:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:56,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 21:40:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:56,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 21:40:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:40:56,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:40:56,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:56,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:40:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 33 proven. 142 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:40:57,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204128126] [2020-10-14 21:40:57,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:57,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:57,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694697943] [2020-10-14 21:40:57,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:40:57,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:40:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:57,094 INFO L87 Difference]: Start difference. First operand 26222 states and 33520 transitions. Second operand 7 states. [2020-10-14 21:41:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:41:15,815 INFO L93 Difference]: Finished difference Result 53483 states and 68532 transitions. [2020-10-14 21:41:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:41:15,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 21:41:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:41:15,897 INFO L225 Difference]: With dead ends: 53483 [2020-10-14 21:41:15,897 INFO L226 Difference]: Without dead ends: 27267 [2020-10-14 21:41:15,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:41:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27267 states. [2020-10-14 21:41:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27267 to 27087. [2020-10-14 21:41:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27087 states. [2020-10-14 21:41:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27087 states to 27087 states and 34445 transitions. [2020-10-14 21:41:16,540 INFO L78 Accepts]: Start accepts. Automaton has 27087 states and 34445 transitions. Word has length 263 [2020-10-14 21:41:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:41:16,541 INFO L479 AbstractCegarLoop]: Abstraction has 27087 states and 34445 transitions. [2020-10-14 21:41:16,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:41:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27087 states and 34445 transitions. [2020-10-14 21:41:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 21:41:16,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:41:16,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:41:16,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:41:16,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:41:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:41:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash 837562785, now seen corresponding path program 1 times [2020-10-14 21:41:16,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:41:16,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944608301] [2020-10-14 21:41:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:41:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:21,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:21,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 21:41:21,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:41:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4403 [2020-10-14 21:41:21,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:21,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:41:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 21:41:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:41:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:41:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:41:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:21,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:41:21,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:41:21,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:21,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:41:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:41:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:41:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:41:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:41:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:21,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:41:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:41:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:41:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:41:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:41:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:21,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:41:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:41:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 21:41:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:41:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:41:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:21,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:41:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:41:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:41:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 21:41:21,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944608301] [2020-10-14 21:41:21,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:41:21,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:41:21,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809297321] [2020-10-14 21:41:21,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:41:21,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:41:21,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:41:21,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:41:21,962 INFO L87 Difference]: Start difference. First operand 27087 states and 34445 transitions. Second operand 7 states.