/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/Problem15_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:56:40,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:56:40,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:56:40,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:56:40,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:56:40,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:56:40,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:56:40,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:56:40,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:56:40,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:56:40,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:56:40,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:56:40,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:56:40,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:56:40,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:56:40,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:56:40,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:56:40,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:56:40,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:56:40,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:56:40,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:56:40,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:56:40,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:56:40,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:56:40,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:56:40,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:56:40,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:56:40,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:56:40,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:56:40,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:56:40,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:56:40,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:56:40,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:56:40,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:56:40,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:56:40,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:56:40,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:56:40,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:56:40,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:56:40,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:56:40,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:56:40,705 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 21:56:40,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:56:40,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:56:40,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:56:40,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:56:40,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:56:40,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:56:40,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:56:40,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:56:40,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:56:40,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:56:40,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:56:40,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:56:40,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:56:40,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:56:40,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:56:40,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:56:40,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:56:40,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:56:40,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:56:40,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:56:40,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:56:40,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:56:40,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:56:40,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:56:40,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:56:40,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:56:40,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:56:40,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:56:40,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:56:40,759 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 21:56:41,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:56:41,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:56:41,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:56:41,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:56:41,077 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:56:41,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-14 21:56:41,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f90b9de35/1871e61a73b747089022801eaf53ee6a/FLAGe39be7191 [2020-10-14 21:56:41,760 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:56:41,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-14 21:56:41,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f90b9de35/1871e61a73b747089022801eaf53ee6a/FLAGe39be7191 [2020-10-14 21:56:41,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f90b9de35/1871e61a73b747089022801eaf53ee6a [2020-10-14 21:56:41,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:56:41,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:56:41,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:56:41,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:56:41,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:56:41,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:56:41" (1/1) ... [2020-10-14 21:56:41,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1be01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:41, skipping insertion in model container [2020-10-14 21:56:41,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:56:41" (1/1) ... [2020-10-14 21:56:41,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:56:42,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:56:43,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:56:43,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:56:43,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:56:43,297 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:56:43,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43 WrapperNode [2020-10-14 21:56:43,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:56:43,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:56:43,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:56:43,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:56:43,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (1/1) ... [2020-10-14 21:56:43,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:56:43,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:56:43,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:56:43,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:56:43,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (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 21:56:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:56:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:56:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:56:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:56:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:56:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:56:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:56:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:56:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:56:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:56:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:56:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:56:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:56:51,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:56:51,378 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:56:51,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:56:51 BoogieIcfgContainer [2020-10-14 21:56:51,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:56:51,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:56:51,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:56:51,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:56:51,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:56:41" (1/3) ... [2020-10-14 21:56:51,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ee5cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:56:51, skipping insertion in model container [2020-10-14 21:56:51,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:43" (2/3) ... [2020-10-14 21:56:51,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ee5cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:56:51, skipping insertion in model container [2020-10-14 21:56:51,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:56:51" (3/3) ... [2020-10-14 21:56:51,404 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label19.c [2020-10-14 21:56:51,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:56:51,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:56:51,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:56:51,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:56:51,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:56:51,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:56:51,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:56:51,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:56:51,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:56:51,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:56:51,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:56:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:56:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 21:56:51,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:51,505 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] [2020-10-14 21:56:51,506 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:51,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1728507445, now seen corresponding path program 1 times [2020-10-14 21:56:51,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:51,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128641708] [2020-10-14 21:56:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:52,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 21:56:52,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 21:56:52,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:52,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:56:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 21:56:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:56:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:52,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:52,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:56:52,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:52,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:52,183 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 21:56:52,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128641708] [2020-10-14 21:56:52,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:56:52,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:56:52,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468163010] [2020-10-14 21:56:52,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:56:52,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:52,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:56:52,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:56:52,209 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:56:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:57,425 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 21:56:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:56:57,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-14 21:56:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:57,449 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 21:56:57,449 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 21:56:57,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:56:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 21:56:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 21:56:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 21:56:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 21:56:57,554 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 51 [2020-10-14 21:56:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:57,555 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 21:56:57,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:56:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 21:56:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 21:56:57,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:57,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:57,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:56:57,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:57,566 INFO L82 PathProgramCache]: Analyzing trace with hash 882457234, now seen corresponding path program 1 times [2020-10-14 21:56:57,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:57,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493603473] [2020-10-14 21:56:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:57,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:00,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:57:00,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:57:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2725 [2020-10-14 21:57:00,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:00,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:57:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:57:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:57:00,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:00,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:00,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:00,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:00,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:57:00,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 21:57:00,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:00,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:57:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:00,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493603473] [2020-10-14 21:57:00,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:57:00,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:57:00,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591559162] [2020-10-14 21:57:00,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:00,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:00,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:00,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:00,707 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 21:57:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:07,070 INFO L93 Difference]: Finished difference Result 1710 states and 2417 transitions. [2020-10-14 21:57:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:57:07,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-14 21:57:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:07,077 INFO L225 Difference]: With dead ends: 1710 [2020-10-14 21:57:07,077 INFO L226 Difference]: Without dead ends: 1025 [2020-10-14 21:57:07,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:57:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-14 21:57:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1014. [2020-10-14 21:57:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-14 21:57:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1367 transitions. [2020-10-14 21:57:07,129 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1367 transitions. Word has length 120 [2020-10-14 21:57:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:07,129 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1367 transitions. [2020-10-14 21:57:07,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1367 transitions. [2020-10-14 21:57:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 21:57:07,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:07,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:07,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:57:07,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1475497091, now seen corresponding path program 1 times [2020-10-14 21:57:07,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:07,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344473702] [2020-10-14 21:57:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:07,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 21:57:07,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:57:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 21:57:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:07,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:57:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:57:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:07,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:07,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:07,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:57:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:07,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:08,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:57:08,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 21:57:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:08,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:57:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:08,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344473702] [2020-10-14 21:57:08,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:57:08,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:57:08,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579667650] [2020-10-14 21:57:08,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:08,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:08,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:08,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:08,101 INFO L87 Difference]: Start difference. First operand 1014 states and 1367 transitions. Second operand 7 states. [2020-10-14 21:57:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:16,669 INFO L93 Difference]: Finished difference Result 2393 states and 3402 transitions. [2020-10-14 21:57:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:16,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-14 21:57:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:16,679 INFO L225 Difference]: With dead ends: 2393 [2020-10-14 21:57:16,679 INFO L226 Difference]: Without dead ends: 1692 [2020-10-14 21:57:16,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-10-14 21:57:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1346. [2020-10-14 21:57:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1346 states. [2020-10-14 21:57:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1744 transitions. [2020-10-14 21:57:16,727 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1744 transitions. Word has length 125 [2020-10-14 21:57:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:16,728 INFO L479 AbstractCegarLoop]: Abstraction has 1346 states and 1744 transitions. [2020-10-14 21:57:16,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1744 transitions. [2020-10-14 21:57:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 21:57:16,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:16,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:16,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:57:16,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:16,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1652859948, now seen corresponding path program 1 times [2020-10-14 21:57:16,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:16,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791909697] [2020-10-14 21:57:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:17,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:17,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:57:17,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 21:57:17,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:17,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:57:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 21:57:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:57:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:17,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:57:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:17,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:17,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:57:17,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 21:57:17,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:17,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:57:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:17,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791909697] [2020-10-14 21:57:17,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:17,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:17,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268869974] [2020-10-14 21:57:17,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:17,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:17,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:17,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:17,559 INFO L87 Difference]: Start difference. First operand 1346 states and 1744 transitions. Second operand 5 states. [2020-10-14 21:57:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:22,423 INFO L93 Difference]: Finished difference Result 2739 states and 3550 transitions. [2020-10-14 21:57:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:22,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 21:57:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:22,440 INFO L225 Difference]: With dead ends: 2739 [2020-10-14 21:57:22,440 INFO L226 Difference]: Without dead ends: 1355 [2020-10-14 21:57:22,444 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 [2020-10-14 21:57:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-10-14 21:57:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1344. [2020-10-14 21:57:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-14 21:57:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1729 transitions. [2020-10-14 21:57:22,484 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1729 transitions. Word has length 146 [2020-10-14 21:57:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:22,485 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1729 transitions. [2020-10-14 21:57:22,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1729 transitions. [2020-10-14 21:57:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 21:57:22,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:22,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:22,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:57:22,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:22,492 INFO L82 PathProgramCache]: Analyzing trace with hash 200485861, now seen corresponding path program 1 times [2020-10-14 21:57:22,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:22,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512924017] [2020-10-14 21:57:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:24,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 21:57:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:57:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-14 21:57:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:24,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:57:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 21:57:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:24,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:24,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:24,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:57:24,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:24,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:24,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:24,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:57:24,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:57:24,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:24,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 21:57:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:57:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:24,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512924017] [2020-10-14 21:57:24,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:57:24,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:57:24,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728425642] [2020-10-14 21:57:24,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:24,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:24,856 INFO L87 Difference]: Start difference. First operand 1344 states and 1729 transitions. Second operand 7 states. [2020-10-14 21:57:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:33,343 INFO L93 Difference]: Finished difference Result 3025 states and 3819 transitions. [2020-10-14 21:57:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:57:33,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 21:57:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:33,353 INFO L225 Difference]: With dead ends: 3025 [2020-10-14 21:57:33,353 INFO L226 Difference]: Without dead ends: 1687 [2020-10-14 21:57:33,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:57:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2020-10-14 21:57:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1656. [2020-10-14 21:57:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-10-14 21:57:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2054 transitions. [2020-10-14 21:57:33,395 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2054 transitions. Word has length 213 [2020-10-14 21:57:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:33,395 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 2054 transitions. [2020-10-14 21:57:33,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2054 transitions. [2020-10-14 21:57:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 21:57:33,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:33,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:33,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:57:33,399 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash 304706217, now seen corresponding path program 1 times [2020-10-14 21:57:33,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:33,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231782283] [2020-10-14 21:57:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 21:57:34,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-14 21:57:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 21:57:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 21:57:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:34,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:57:34,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:57:34,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 21:57:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 21:57:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:34,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231782283] [2020-10-14 21:57:34,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:34,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:34,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904802296] [2020-10-14 21:57:34,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:34,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:34,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:34,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:34,880 INFO L87 Difference]: Start difference. First operand 1656 states and 2054 transitions. Second operand 5 states. [2020-10-14 21:57:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:42,238 INFO L93 Difference]: Finished difference Result 3047 states and 3849 transitions. [2020-10-14 21:57:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:42,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-14 21:57:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:42,253 INFO L225 Difference]: With dead ends: 3047 [2020-10-14 21:57:42,253 INFO L226 Difference]: Without dead ends: 1663 [2020-10-14 21:57:42,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:57:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2020-10-14 21:57:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1656. [2020-10-14 21:57:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-10-14 21:57:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2037 transitions. [2020-10-14 21:57:42,293 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2037 transitions. Word has length 231 [2020-10-14 21:57:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:42,293 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 2037 transitions. [2020-10-14 21:57:42,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2037 transitions. [2020-10-14 21:57:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 21:57:42,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:42,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:42,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:57:42,298 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:42,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1544909855, now seen corresponding path program 1 times [2020-10-14 21:57:42,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:42,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488753109] [2020-10-14 21:57:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 21:57:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-14 21:57:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:44,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:57:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 21:57:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:44,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:44,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:44,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:57:44,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:44,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:44,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:44,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:57:44,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 21:57:44,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:44,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:57:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 21:57:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:45,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488753109] [2020-10-14 21:57:45,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:45,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:45,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618029434] [2020-10-14 21:57:45,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:57:45,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:45,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:57:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:57:45,162 INFO L87 Difference]: Start difference. First operand 1656 states and 2037 transitions. Second operand 8 states. [2020-10-14 21:57:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:54,150 INFO L93 Difference]: Finished difference Result 4021 states and 5200 transitions. [2020-10-14 21:57:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:57:54,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-14 21:57:54,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:54,163 INFO L225 Difference]: With dead ends: 4021 [2020-10-14 21:57:54,163 INFO L226 Difference]: Without dead ends: 2678 [2020-10-14 21:57:54,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:57:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-10-14 21:57:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2620. [2020-10-14 21:57:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2620 states. [2020-10-14 21:57:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3141 transitions. [2020-10-14 21:57:54,226 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3141 transitions. Word has length 288 [2020-10-14 21:57:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:54,226 INFO L479 AbstractCegarLoop]: Abstraction has 2620 states and 3141 transitions. [2020-10-14 21:57:54,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:57:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3141 transitions. [2020-10-14 21:57:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-14 21:57:54,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:54,233 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:54,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:57:54,234 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:54,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:54,234 INFO L82 PathProgramCache]: Analyzing trace with hash 201120805, now seen corresponding path program 1 times [2020-10-14 21:57:54,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:54,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927263061] [2020-10-14 21:57:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:59,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-14 21:57:59,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:57:59,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 21:57:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:59,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:57:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-14 21:57:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:59,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:59,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:57:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:59,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:59,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:57:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 21:57:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:59,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 21:57:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 21:57:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:59,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:00,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:00,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:58:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 21:58:00,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:00,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:58:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:58:00,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927263061] [2020-10-14 21:58:00,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:00,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:58:00,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549025509] [2020-10-14 21:58:00,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:00,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:00,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:00,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:00,435 INFO L87 Difference]: Start difference. First operand 2620 states and 3141 transitions. Second operand 7 states. [2020-10-14 21:58:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:11,292 INFO L93 Difference]: Finished difference Result 6286 states and 7788 transitions. [2020-10-14 21:58:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:11,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-14 21:58:11,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:11,315 INFO L225 Difference]: With dead ends: 6286 [2020-10-14 21:58:11,315 INFO L226 Difference]: Without dead ends: 3654 [2020-10-14 21:58:11,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2020-10-14 21:58:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3573. [2020-10-14 21:58:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-10-14 21:58:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4188 transitions. [2020-10-14 21:58:11,412 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4188 transitions. Word has length 360 [2020-10-14 21:58:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:11,412 INFO L479 AbstractCegarLoop]: Abstraction has 3573 states and 4188 transitions. [2020-10-14 21:58:11,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4188 transitions. [2020-10-14 21:58:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-14 21:58:11,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:11,420 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:11,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:58:11,420 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:11,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash -483784602, now seen corresponding path program 1 times [2020-10-14 21:58:11,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:11,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121504641] [2020-10-14 21:58:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:14,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:14,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 21:58:14,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:58:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:14,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:14,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:14,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:14,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:14,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:14,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:58:14,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-14 21:58:14,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:14,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:58:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:58:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:14,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:14,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:58:14,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:14,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 21:58:14,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:14,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:58:14,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:15,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121504641] [2020-10-14 21:58:15,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:15,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:15,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335029001] [2020-10-14 21:58:15,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:15,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:15,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:15,019 INFO L87 Difference]: Start difference. First operand 3573 states and 4188 transitions. Second operand 7 states. [2020-10-14 21:58:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:23,079 INFO L93 Difference]: Finished difference Result 9129 states and 10982 transitions. [2020-10-14 21:58:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:58:23,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-14 21:58:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:23,103 INFO L225 Difference]: With dead ends: 9129 [2020-10-14 21:58:23,103 INFO L226 Difference]: Without dead ends: 5869 [2020-10-14 21:58:23,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:58:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5869 states. [2020-10-14 21:58:23,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5869 to 5470. [2020-10-14 21:58:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5470 states. [2020-10-14 21:58:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 6240 transitions. [2020-10-14 21:58:23,213 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 6240 transitions. Word has length 394 [2020-10-14 21:58:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:23,214 INFO L479 AbstractCegarLoop]: Abstraction has 5470 states and 6240 transitions. [2020-10-14 21:58:23,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 6240 transitions. [2020-10-14 21:58:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-14 21:58:23,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:23,222 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:23,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:58:23,223 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:23,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:23,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1113151698, now seen corresponding path program 1 times [2020-10-14 21:58:23,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:23,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469079724] [2020-10-14 21:58:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:26,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:26,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-14 21:58:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3132 [2020-10-14 21:58:26,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:26,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:58:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:58:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:58:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:26,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:26,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:26,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 21:58:26,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:26,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:58:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:26,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:58:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:58:26,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 122 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:27,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469079724] [2020-10-14 21:58:27,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:27,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:58:27,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144807334] [2020-10-14 21:58:27,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:58:27,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:27,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:58:27,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:58:27,147 INFO L87 Difference]: Start difference. First operand 5470 states and 6240 transitions. Second operand 8 states. [2020-10-14 21:58:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:43,911 INFO L93 Difference]: Finished difference Result 12178 states and 14435 transitions. [2020-10-14 21:58:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:43,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 406 [2020-10-14 21:58:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:43,945 INFO L225 Difference]: With dead ends: 12178 [2020-10-14 21:58:43,946 INFO L226 Difference]: Without dead ends: 8087 [2020-10-14 21:58:43,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2020-10-14 21:58:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 8027. [2020-10-14 21:58:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8027 states. [2020-10-14 21:58:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 9317 transitions. [2020-10-14 21:58:44,119 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 9317 transitions. Word has length 406 [2020-10-14 21:58:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:44,120 INFO L479 AbstractCegarLoop]: Abstraction has 8027 states and 9317 transitions. [2020-10-14 21:58:44,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:58:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 9317 transitions. [2020-10-14 21:58:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 21:58:44,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:44,125 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:44,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:58:44,126 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:44,126 INFO L82 PathProgramCache]: Analyzing trace with hash 476604525, now seen corresponding path program 1 times [2020-10-14 21:58:44,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:44,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522469654] [2020-10-14 21:58:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:45,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:58:45,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:58:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:45,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:45,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:45,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:58:45,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:45,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:58:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:46,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:58:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:46,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:46,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:58:46,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:58:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:46,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522469654] [2020-10-14 21:58:46,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:46,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:46,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153551098] [2020-10-14 21:58:46,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:46,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:46,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:46,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:46,441 INFO L87 Difference]: Start difference. First operand 8027 states and 9317 transitions. Second operand 7 states. [2020-10-14 21:58:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:57,613 INFO L93 Difference]: Finished difference Result 18613 states and 22266 transitions. [2020-10-14 21:58:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:58:57,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 21:58:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:57,655 INFO L225 Difference]: With dead ends: 18613 [2020-10-14 21:58:57,655 INFO L226 Difference]: Without dead ends: 10899 [2020-10-14 21:58:57,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:58:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10899 states. [2020-10-14 21:58:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10899 to 10854. [2020-10-14 21:58:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10854 states. [2020-10-14 21:58:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10854 states to 10854 states and 12319 transitions. [2020-10-14 21:58:57,888 INFO L78 Accepts]: Start accepts. Automaton has 10854 states and 12319 transitions. Word has length 417 [2020-10-14 21:58:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:57,890 INFO L479 AbstractCegarLoop]: Abstraction has 10854 states and 12319 transitions. [2020-10-14 21:58:57,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10854 states and 12319 transitions. [2020-10-14 21:58:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 21:58:57,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:57,897 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:57,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:58:57,898 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:57,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:57,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1007660407, now seen corresponding path program 1 times [2020-10-14 21:58:57,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:57,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91756115] [2020-10-14 21:58:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:58,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-14 21:58:58,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-14 21:58:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:58,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 21:58:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:58,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:58,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:58,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:58:58,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:58,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:59,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:58:59,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91756115] [2020-10-14 21:58:59,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:59,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:58:59,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992529248] [2020-10-14 21:58:59,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:58:59,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:59,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:58:59,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:58:59,248 INFO L87 Difference]: Start difference. First operand 10854 states and 12319 transitions. Second operand 5 states. [2020-10-14 21:59:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:06,843 INFO L93 Difference]: Finished difference Result 24840 states and 29048 transitions. [2020-10-14 21:59:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:59:06,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 448 [2020-10-14 21:59:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:06,909 INFO L225 Difference]: With dead ends: 24840 [2020-10-14 21:59:06,909 INFO L226 Difference]: Without dead ends: 14299 [2020-10-14 21:59:06,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:59:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14299 states. [2020-10-14 21:59:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 14281. [2020-10-14 21:59:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14281 states. [2020-10-14 21:59:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14281 states to 14281 states and 16143 transitions. [2020-10-14 21:59:07,215 INFO L78 Accepts]: Start accepts. Automaton has 14281 states and 16143 transitions. Word has length 448 [2020-10-14 21:59:07,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:07,217 INFO L479 AbstractCegarLoop]: Abstraction has 14281 states and 16143 transitions. [2020-10-14 21:59:07,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:59:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14281 states and 16143 transitions. [2020-10-14 21:59:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-14 21:59:07,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:07,223 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:07,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:59:07,223 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:07,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:07,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1753482893, now seen corresponding path program 1 times [2020-10-14 21:59:07,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:07,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142974698] [2020-10-14 21:59:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:09,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:09,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 21:59:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1984 [2020-10-14 21:59:09,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:09,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:59:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:59:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 490 [2020-10-14 21:59:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:09,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:09,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:09,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:09,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:59:09,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:09,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:59:09,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:09,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:09,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:09,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 21:59:09,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:09,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 21:59:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:59:10,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 21:59:10,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:10,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:59:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:59:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 21:59:10,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142974698] [2020-10-14 21:59:10,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:10,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:59:10,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931232474] [2020-10-14 21:59:10,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:59:10,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:10,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:59:10,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:59:10,654 INFO L87 Difference]: Start difference. First operand 14281 states and 16143 transitions. Second operand 8 states. [2020-10-14 21:59:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:25,197 INFO L93 Difference]: Finished difference Result 29309 states and 33967 transitions. [2020-10-14 21:59:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:59:25,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-14 21:59:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:25,244 INFO L225 Difference]: With dead ends: 29309 [2020-10-14 21:59:25,244 INFO L226 Difference]: Without dead ends: 16530 [2020-10-14 21:59:25,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:59:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16530 states. [2020-10-14 21:59:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16530 to 15870. [2020-10-14 21:59:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15870 states. [2020-10-14 21:59:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15870 states to 15870 states and 17794 transitions. [2020-10-14 21:59:25,587 INFO L78 Accepts]: Start accepts. Automaton has 15870 states and 17794 transitions. Word has length 484 [2020-10-14 21:59:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:25,588 INFO L479 AbstractCegarLoop]: Abstraction has 15870 states and 17794 transitions. [2020-10-14 21:59:25,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:59:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 15870 states and 17794 transitions. [2020-10-14 21:59:25,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-14 21:59:25,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:25,595 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:25,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:59:25,596 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1769945968, now seen corresponding path program 1 times [2020-10-14 21:59:25,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:25,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118340182] [2020-10-14 21:59:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:28,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-14 21:59:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:59:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3117 [2020-10-14 21:59:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:28,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:59:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:59:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:59:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:28,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:59:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:28,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:29,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 21:59:29,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:29,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:29,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:29,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:29,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:59:29,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:59:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:29,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:59:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:59:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:29,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:29,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:29,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:59:29,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:29,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:59:29,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:29,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:59:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 222 proven. 45 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:59:29,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118340182] [2020-10-14 21:59:29,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:29,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:59:29,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037886874] [2020-10-14 21:59:29,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:59:29,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:29,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:59:29,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:59:29,603 INFO L87 Difference]: Start difference. First operand 15870 states and 17794 transitions. Second operand 6 states. [2020-10-14 21:59:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:37,142 INFO L93 Difference]: Finished difference Result 32047 states and 37808 transitions. [2020-10-14 21:59:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:59:37,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 517 [2020-10-14 21:59:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:37,203 INFO L225 Difference]: With dead ends: 32047 [2020-10-14 21:59:37,203 INFO L226 Difference]: Without dead ends: 19918 [2020-10-14 21:59:37,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:59:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19918 states. [2020-10-14 21:59:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19918 to 19419. [2020-10-14 21:59:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19419 states. [2020-10-14 21:59:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19419 states to 19419 states and 22168 transitions. [2020-10-14 21:59:37,585 INFO L78 Accepts]: Start accepts. Automaton has 19419 states and 22168 transitions. Word has length 517 [2020-10-14 21:59:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:37,586 INFO L479 AbstractCegarLoop]: Abstraction has 19419 states and 22168 transitions. [2020-10-14 21:59:37,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:59:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 19419 states and 22168 transitions. [2020-10-14 21:59:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 21:59:37,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:37,596 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:37,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:59:37,597 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:37,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:37,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1869841573, now seen corresponding path program 1 times [2020-10-14 21:59:37,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:37,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580514431] [2020-10-14 21:59:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-14 21:59:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:59:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-10-14 21:59:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:59:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:59:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:59:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:59:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:59:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:59:39,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:59:39,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:59:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:59:39,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580514431] [2020-10-14 21:59:39,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:39,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:59:39,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813344999] [2020-10-14 21:59:39,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:59:39,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:59:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:59:39,983 INFO L87 Difference]: Start difference. First operand 19419 states and 22168 transitions. Second operand 7 states. [2020-10-14 21:59:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:57,700 INFO L93 Difference]: Finished difference Result 38986 states and 46057 transitions. [2020-10-14 21:59:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:59:57,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-14 21:59:57,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:57,754 INFO L225 Difference]: With dead ends: 38986 [2020-10-14 21:59:57,754 INFO L226 Difference]: Without dead ends: 22681 [2020-10-14 21:59:57,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:59:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22681 states. [2020-10-14 21:59:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22681 to 21052. [2020-10-14 21:59:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21052 states. [2020-10-14 21:59:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21052 states to 21052 states and 24332 transitions. [2020-10-14 21:59:58,124 INFO L78 Accepts]: Start accepts. Automaton has 21052 states and 24332 transitions. Word has length 549 [2020-10-14 21:59:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:58,125 INFO L479 AbstractCegarLoop]: Abstraction has 21052 states and 24332 transitions. [2020-10-14 21:59:58,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:59:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 21052 states and 24332 transitions. [2020-10-14 21:59:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-14 21:59:58,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:58,137 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:58,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 21:59:58,137 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1033607106, now seen corresponding path program 1 times [2020-10-14 21:59:58,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:58,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307074370] [2020-10-14 21:59:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-14 22:00:00,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:00:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-14 22:00:00,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:00:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:00:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:00:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:00:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:00:00,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:00:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:00:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:00:00,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:00:00,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:00:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:00:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:00:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 22:00:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:00:01,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:01,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:00:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:00:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:00:01,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307074370] [2020-10-14 22:00:01,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:00:01,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:00:01,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457209677] [2020-10-14 22:00:01,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:00:01,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:00:01,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:00:01,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:00:01,266 INFO L87 Difference]: Start difference. First operand 21052 states and 24332 transitions. Second operand 7 states. [2020-10-14 22:00:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:00:16,833 INFO L93 Difference]: Finished difference Result 47346 states and 56352 transitions. [2020-10-14 22:00:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:00:16,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 552 [2020-10-14 22:00:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:00:16,902 INFO L225 Difference]: With dead ends: 47346 [2020-10-14 22:00:16,902 INFO L226 Difference]: Without dead ends: 30035 [2020-10-14 22:00:16,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:00:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30035 states. [2020-10-14 22:00:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30035 to 27850. [2020-10-14 22:00:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27850 states. [2020-10-14 22:00:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27850 states to 27850 states and 32620 transitions. [2020-10-14 22:00:17,356 INFO L78 Accepts]: Start accepts. Automaton has 27850 states and 32620 transitions. Word has length 552 [2020-10-14 22:00:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:00:17,356 INFO L479 AbstractCegarLoop]: Abstraction has 27850 states and 32620 transitions. [2020-10-14 22:00:17,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:00:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27850 states and 32620 transitions. [2020-10-14 22:00:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-14 22:00:17,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:00:17,365 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:00:17,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:00:17,365 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:00:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:00:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1966870406, now seen corresponding path program 1 times [2020-10-14 22:00:17,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:00:17,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697749171] [2020-10-14 22:00:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:00:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:20,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:20,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-14 22:00:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3323 [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:00:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:00:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:20,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:20,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:00:20,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:00:20,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:20,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:20,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:00:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:21,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:21,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:21,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:00:21,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 22:00:21,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:21,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:00:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:00:21,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:00:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:21,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:00:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:00:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:00:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 22:00:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 510 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:00:22,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697749171] [2020-10-14 22:00:22,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:00:22,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:00:22,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86547759] [2020-10-14 22:00:22,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:00:22,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:00:22,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:00:22,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:00:22,288 INFO L87 Difference]: Start difference. First operand 27850 states and 32620 transitions. Second operand 10 states.