/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/Problem03_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:15:40,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:15:40,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:15:40,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:15:40,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:15:40,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:15:40,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:15:40,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:15:40,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:15:40,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:15:40,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:15:40,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:15:40,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:15:40,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:15:40,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:15:40,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:15:40,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:15:40,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:15:40,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:15:40,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:15:40,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:15:40,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:15:40,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:15:40,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:15:40,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:15:40,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:15:40,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:15:40,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:15:40,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:15:40,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:15:40,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:15:40,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:15:40,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:15:40,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:15:40,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:15:40,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:15:40,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:15:40,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:15:40,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:15:40,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:15:40,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:15:40,729 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 19:15:40,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:15:40,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:15:40,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:15:40,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:15:40,774 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:15:40,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:15:40,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:15:40,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:15:40,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:15:40,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:15:40,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:15:40,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:15:40,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:15:40,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:15:40,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:15:40,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:15:40,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:15:40,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:15:40,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:15:40,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:15:40,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:15:40,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:15:40,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:15:40,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:15:40,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:15:40,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:15:40,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:15:40,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:15:40,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:15:40,781 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 19:15:41,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:15:41,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:15:41,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:15:41,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:15:41,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:15:41,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-14 19:15:41,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67d6d03e9/f2d1e131cab54b9f81cd33dcb48d6961/FLAG98dfd3542 [2020-10-14 19:15:41,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:15:41,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-14 19:15:41,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67d6d03e9/f2d1e131cab54b9f81cd33dcb48d6961/FLAG98dfd3542 [2020-10-14 19:15:42,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67d6d03e9/f2d1e131cab54b9f81cd33dcb48d6961 [2020-10-14 19:15:42,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:15:42,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:15:42,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:15:42,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:15:42,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:15:42,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:15:42" (1/1) ... [2020-10-14 19:15:42,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:42, skipping insertion in model container [2020-10-14 19:15:42,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:15:42" (1/1) ... [2020-10-14 19:15:42,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:15:42,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:15:42,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:15:42,983 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:15:43,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:15:43,411 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:15:43,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43 WrapperNode [2020-10-14 19:15:43,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:15:43,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:15:43,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:15:43,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:15:43,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (1/1) ... [2020-10-14 19:15:43,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:15:43,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:15:43,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:15:43,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:15:43,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (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 19:15:43,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:15:43,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:15:43,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:15:43,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:15:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:15:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:15:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:15:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:15:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:15:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:15:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:15:45,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:15:45,606 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:15:45,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:15:45 BoogieIcfgContainer [2020-10-14 19:15:45,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:15:45,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:15:45,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:15:45,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:15:45,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:15:42" (1/3) ... [2020-10-14 19:15:45,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5115a45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:15:45, skipping insertion in model container [2020-10-14 19:15:45,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:43" (2/3) ... [2020-10-14 19:15:45,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5115a45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:15:45, skipping insertion in model container [2020-10-14 19:15:45,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:15:45" (3/3) ... [2020-10-14 19:15:45,623 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2020-10-14 19:15:45,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:15:45,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:15:45,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:15:45,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:15:45,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:15:45,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:15:45,756 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:15:45,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:15:45,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:15:45,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:15:45,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:15:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:15:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 19:15:45,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:45,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:45,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:45,826 INFO L82 PathProgramCache]: Analyzing trace with hash -148239995, now seen corresponding path program 1 times [2020-10-14 19:15:45,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:45,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296161577] [2020-10-14 19:15:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:50,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:50,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 19:15:50,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4039 [2020-10-14 19:15:50,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:50,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:15:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 19:15:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:15:50,650 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:50,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:50,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:50,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:15:50,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:50,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:50,760 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 19:15:50,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296161577] [2020-10-14 19:15:50,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:15:50,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:15:50,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140463223] [2020-10-14 19:15:50,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:15:50,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:50,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:15:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:15:50,792 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:15:50,981 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:53,802 INFO L93 Difference]: Finished difference Result 858 states and 1518 transitions. [2020-10-14 19:15:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:53,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 19:15:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:53,825 INFO L225 Difference]: With dead ends: 858 [2020-10-14 19:15:53,826 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 19:15:53,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 19:15:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 465. [2020-10-14 19:15:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-14 19:15:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 743 transitions. [2020-10-14 19:15:53,931 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 743 transitions. Word has length 150 [2020-10-14 19:15:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:53,933 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 743 transitions. [2020-10-14 19:15:53,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:15:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 743 transitions. [2020-10-14 19:15:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 19:15:53,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:53,940 INFO L422 BasicCegarLoop]: trace histogram [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 19:15:53,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:15:53,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:53,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1291531554, now seen corresponding path program 1 times [2020-10-14 19:15:53,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:53,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355661069] [2020-10-14 19:15:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:55,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:55,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 19:15:55,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:55,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1988 [2020-10-14 19:15:55,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:55,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:55,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:15:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 19:15:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:56,213 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:56,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:56,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:15:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:56,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:56,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:56,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:15:56,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:15:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:56,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:15:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:15:56,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355661069] [2020-10-14 19:15:56,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:56,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:15:56,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909711402] [2020-10-14 19:15:56,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:15:56,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:56,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:15:56,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:56,405 INFO L87 Difference]: Start difference. First operand 465 states and 743 transitions. Second operand 5 states. [2020-10-14 19:15:56,539 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:15:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:58,770 INFO L93 Difference]: Finished difference Result 1360 states and 2212 transitions. [2020-10-14 19:15:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:58,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 19:15:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:58,782 INFO L225 Difference]: With dead ends: 1360 [2020-10-14 19:15:58,782 INFO L226 Difference]: Without dead ends: 901 [2020-10-14 19:15:58,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:15:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-10-14 19:15:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 883. [2020-10-14 19:15:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-14 19:15:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1395 transitions. [2020-10-14 19:15:58,848 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1395 transitions. Word has length 159 [2020-10-14 19:15:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:58,849 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1395 transitions. [2020-10-14 19:15:58,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:15:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1395 transitions. [2020-10-14 19:15:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 19:15:58,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:58,855 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:15:58,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:15:58,856 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:58,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1098345218, now seen corresponding path program 1 times [2020-10-14 19:15:58,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:58,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356718144] [2020-10-14 19:15:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:02,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:02,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 19:16:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3904 [2020-10-14 19:16:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:02,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:16:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 19:16:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:03,123 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:03,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:03,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:16:03,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:16:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:16:03,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356718144] [2020-10-14 19:16:03,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:03,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:16:03,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75319108] [2020-10-14 19:16:03,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:16:03,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:03,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:16:03,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:16:03,305 INFO L87 Difference]: Start difference. First operand 883 states and 1395 transitions. Second operand 5 states. [2020-10-14 19:16:03,471 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:05,639 INFO L93 Difference]: Finished difference Result 2614 states and 4199 transitions. [2020-10-14 19:16:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:16:05,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-14 19:16:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:05,651 INFO L225 Difference]: With dead ends: 2614 [2020-10-14 19:16:05,652 INFO L226 Difference]: Without dead ends: 1737 [2020-10-14 19:16:05,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:16:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-10-14 19:16:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1523. [2020-10-14 19:16:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-10-14 19:16:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2322 transitions. [2020-10-14 19:16:05,710 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2322 transitions. Word has length 161 [2020-10-14 19:16:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:05,711 INFO L479 AbstractCegarLoop]: Abstraction has 1523 states and 2322 transitions. [2020-10-14 19:16:05,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:16:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2322 transitions. [2020-10-14 19:16:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 19:16:05,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:05,718 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:16:05,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:16:05,718 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash 763506117, now seen corresponding path program 1 times [2020-10-14 19:16:05,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:05,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48683477] [2020-10-14 19:16:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:07,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 19:16:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-14 19:16:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:07,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 19:16:07,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 19:16:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:07,806 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:07,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:07,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:07,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:07,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:07,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:07,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:07,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:07,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:07,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:16:07,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:16:07,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:07,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:16:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:16:08,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48683477] [2020-10-14 19:16:08,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:08,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:16:08,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953784675] [2020-10-14 19:16:08,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:16:08,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:08,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:16:08,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:16:08,033 INFO L87 Difference]: Start difference. First operand 1523 states and 2322 transitions. Second operand 6 states. [2020-10-14 19:16:08,291 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:08,407 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:12,363 INFO L93 Difference]: Finished difference Result 5137 states and 8021 transitions. [2020-10-14 19:16:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:16:12,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-14 19:16:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:12,394 INFO L225 Difference]: With dead ends: 5137 [2020-10-14 19:16:12,394 INFO L226 Difference]: Without dead ends: 3620 [2020-10-14 19:16:12,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:16:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2020-10-14 19:16:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3199. [2020-10-14 19:16:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 19:16:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4884 transitions. [2020-10-14 19:16:12,524 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4884 transitions. Word has length 168 [2020-10-14 19:16:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:12,524 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 4884 transitions. [2020-10-14 19:16:12,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:16:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4884 transitions. [2020-10-14 19:16:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 19:16:12,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:12,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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 19:16:12,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:16:12,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1414062904, now seen corresponding path program 1 times [2020-10-14 19:16:12,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:12,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201961330] [2020-10-14 19:16:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:12,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:17,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:17,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 19:16:17,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 19:16:17,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 19:16:17,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:17,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:16:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 19:16:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:17,878 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:17,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:17,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:17,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:17,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:17,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:16:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:17,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:17,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:16:17,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:16:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:17,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:16:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:16:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:17,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 19:16:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:16:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:16:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 19:16:18,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201961330] [2020-10-14 19:16:18,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:18,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:16:18,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394836002] [2020-10-14 19:16:18,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:16:18,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:18,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:16:18,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:16:18,156 INFO L87 Difference]: Start difference. First operand 3199 states and 4884 transitions. Second operand 6 states. [2020-10-14 19:16:18,289 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:18,528 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:16:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:21,233 INFO L93 Difference]: Finished difference Result 9331 states and 14739 transitions. [2020-10-14 19:16:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:16:21,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-10-14 19:16:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:21,279 INFO L225 Difference]: With dead ends: 9331 [2020-10-14 19:16:21,279 INFO L226 Difference]: Without dead ends: 6138 [2020-10-14 19:16:21,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:16:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2020-10-14 19:16:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 5717. [2020-10-14 19:16:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5717 states. [2020-10-14 19:16:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 8654 transitions. [2020-10-14 19:16:21,548 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 8654 transitions. Word has length 196 [2020-10-14 19:16:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:21,549 INFO L479 AbstractCegarLoop]: Abstraction has 5717 states and 8654 transitions. [2020-10-14 19:16:21,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:16:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 8654 transitions. [2020-10-14 19:16:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 19:16:21,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:21,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:21,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:16:21,568 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:21,568 INFO L82 PathProgramCache]: Analyzing trace with hash 577775424, now seen corresponding path program 1 times [2020-10-14 19:16:21,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:21,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229098602] [2020-10-14 19:16:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 19:16:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:16:26,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:26,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:16:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:16:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 19:16:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:26,787 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:26,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:26,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:26,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:26,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:26,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:16:26,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:26,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:16:26,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:26,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:16:26,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:16:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:26,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:26,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 19:16:26,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 19:16:26,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:26,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 19:16:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:26,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 19:16:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:27,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:27,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:16:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 19:16:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:27,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:16:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:16:27,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229098602] [2020-10-14 19:16:27,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:27,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:27,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341964869] [2020-10-14 19:16:27,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:27,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:27,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:27,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:27,150 INFO L87 Difference]: Start difference. First operand 5717 states and 8654 transitions. Second operand 7 states. [2020-10-14 19:16:27,304 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:28,760 INFO L93 Difference]: Finished difference Result 11396 states and 17489 transitions. [2020-10-14 19:16:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:16:28,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-14 19:16:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:28,789 INFO L225 Difference]: With dead ends: 11396 [2020-10-14 19:16:28,790 INFO L226 Difference]: Without dead ends: 5685 [2020-10-14 19:16:28,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:16:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2020-10-14 19:16:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5681. [2020-10-14 19:16:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5681 states. [2020-10-14 19:16:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 8365 transitions. [2020-10-14 19:16:28,972 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 8365 transitions. Word has length 212 [2020-10-14 19:16:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:28,973 INFO L479 AbstractCegarLoop]: Abstraction has 5681 states and 8365 transitions. [2020-10-14 19:16:28,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 8365 transitions. [2020-10-14 19:16:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 19:16:28,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:28,997 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:16:28,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:16:28,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash 57881904, now seen corresponding path program 1 times [2020-10-14 19:16:28,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:29,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434971422] [2020-10-14 19:16:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 19:16:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3354 [2020-10-14 19:16:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:32,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:16:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 19:16:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:32,558 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:32,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:16:32,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:16:32,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:32,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:16:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:16:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:16:32,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 19:16:32,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:32,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:16:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:16:33,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434971422] [2020-10-14 19:16:33,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:33,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:33,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208267729] [2020-10-14 19:16:33,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:33,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:33,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:33,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:33,086 INFO L87 Difference]: Start difference. First operand 5681 states and 8365 transitions. Second operand 7 states. [2020-10-14 19:16:33,571 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:36,251 INFO L93 Difference]: Finished difference Result 11655 states and 19480 transitions. [2020-10-14 19:16:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:36,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-14 19:16:36,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:36,294 INFO L225 Difference]: With dead ends: 11655 [2020-10-14 19:16:36,295 INFO L226 Difference]: Without dead ends: 5980 [2020-10-14 19:16:36,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2020-10-14 19:16:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 5743. [2020-10-14 19:16:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5743 states. [2020-10-14 19:16:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5743 states to 5743 states and 7966 transitions. [2020-10-14 19:16:36,586 INFO L78 Accepts]: Start accepts. Automaton has 5743 states and 7966 transitions. Word has length 282 [2020-10-14 19:16:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:36,587 INFO L479 AbstractCegarLoop]: Abstraction has 5743 states and 7966 transitions. [2020-10-14 19:16:36,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5743 states and 7966 transitions. [2020-10-14 19:16:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 19:16:36,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:36,610 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:16:36,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:16:36,610 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:36,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1694112724, now seen corresponding path program 1 times [2020-10-14 19:16:36,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:36,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517538437] [2020-10-14 19:16:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 19:16:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-10-14 19:16:38,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:16:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 19:16:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:38,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:16:38,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:38,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:38,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:38,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:16:38,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:38,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:16:38,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:39,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:16:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:16:39,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517538437] [2020-10-14 19:16:39,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:39,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:39,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437031959] [2020-10-14 19:16:39,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:39,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:39,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:39,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:39,408 INFO L87 Difference]: Start difference. First operand 5743 states and 7966 transitions. Second operand 7 states. [2020-10-14 19:16:39,545 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:40,352 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:41,887 INFO L93 Difference]: Finished difference Result 11516 states and 16248 transitions. [2020-10-14 19:16:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:41,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 19:16:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:41,918 INFO L225 Difference]: With dead ends: 11516 [2020-10-14 19:16:41,918 INFO L226 Difference]: Without dead ends: 5779 [2020-10-14 19:16:41,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2020-10-14 19:16:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5747. [2020-10-14 19:16:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5747 states. [2020-10-14 19:16:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 7157 transitions. [2020-10-14 19:16:42,085 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 7157 transitions. Word has length 284 [2020-10-14 19:16:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:42,085 INFO L479 AbstractCegarLoop]: Abstraction has 5747 states and 7157 transitions. [2020-10-14 19:16:42,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 7157 transitions. [2020-10-14 19:16:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 19:16:42,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:42,105 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 19:16:42,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:16:42,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:42,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1575433596, now seen corresponding path program 1 times [2020-10-14 19:16:42,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:42,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640636231] [2020-10-14 19:16:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:47,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 19:16:47,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:16:47,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:47,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:16:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:16:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:47,422 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:47,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:47,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:16:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:16:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:47,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:16:47,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 19:16:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:47,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:16:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:16:48,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640636231] [2020-10-14 19:16:48,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:48,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:48,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782706518] [2020-10-14 19:16:48,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:48,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:48,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:48,497 INFO L87 Difference]: Start difference. First operand 5747 states and 7157 transitions. Second operand 7 states. [2020-10-14 19:16:48,777 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:50,271 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:16:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:51,580 INFO L93 Difference]: Finished difference Result 13812 states and 18429 transitions. [2020-10-14 19:16:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:16:51,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-14 19:16:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:51,615 INFO L225 Difference]: With dead ends: 13812 [2020-10-14 19:16:51,615 INFO L226 Difference]: Without dead ends: 8071 [2020-10-14 19:16:51,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:16:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2020-10-14 19:16:51,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 7889. [2020-10-14 19:16:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7889 states. [2020-10-14 19:16:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7889 states to 7889 states and 9746 transitions. [2020-10-14 19:16:51,859 INFO L78 Accepts]: Start accepts. Automaton has 7889 states and 9746 transitions. Word has length 311 [2020-10-14 19:16:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:51,860 INFO L479 AbstractCegarLoop]: Abstraction has 7889 states and 9746 transitions. [2020-10-14 19:16:51,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7889 states and 9746 transitions. [2020-10-14 19:16:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-14 19:16:51,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:51,886 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:16:51,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:16:51,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1888855136, now seen corresponding path program 1 times [2020-10-14 19:16:51,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:51,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630140817] [2020-10-14 19:16:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:55,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 19:16:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 19:16:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:57,211 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:57,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:57,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:57,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:57,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:57,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:57,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:16:57,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:16:57,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:57,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 19:16:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:57,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 19:16:57,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 19:16:57,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630140817] [2020-10-14 19:16:57,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:57,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:16:57,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914243846] [2020-10-14 19:16:57,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:16:57,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:57,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:16:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:16:57,660 INFO L87 Difference]: Start difference. First operand 7889 states and 9746 transitions. Second operand 5 states. [2020-10-14 19:16:58,060 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:17:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:00,447 INFO L93 Difference]: Finished difference Result 21000 states and 26087 transitions. [2020-10-14 19:17:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:17:00,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-14 19:17:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:00,485 INFO L225 Difference]: With dead ends: 21000 [2020-10-14 19:17:00,486 INFO L226 Difference]: Without dead ends: 13117 [2020-10-14 19:17:00,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:17:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13117 states. [2020-10-14 19:17:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13117 to 12068. [2020-10-14 19:17:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12068 states. [2020-10-14 19:17:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12068 states to 12068 states and 14912 transitions. [2020-10-14 19:17:00,770 INFO L78 Accepts]: Start accepts. Automaton has 12068 states and 14912 transitions. Word has length 325 [2020-10-14 19:17:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:00,771 INFO L479 AbstractCegarLoop]: Abstraction has 12068 states and 14912 transitions. [2020-10-14 19:17:00,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:17:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 12068 states and 14912 transitions. [2020-10-14 19:17:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-14 19:17:00,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:00,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:17:00,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:17:00,814 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:00,814 INFO L82 PathProgramCache]: Analyzing trace with hash -743691192, now seen corresponding path program 1 times [2020-10-14 19:17:00,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:00,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611215403] [2020-10-14 19:17:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:05,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 19:17:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 19:17:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:06,236 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:06,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:17:06,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:06,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:06,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:17:06,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:17:06,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:06,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:17:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:17:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:17:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:06,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:06,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:17:06,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:17:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 19:17:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:06,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:06,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:17:06,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 19:17:06,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:06,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:17:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 19:17:06,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611215403] [2020-10-14 19:17:06,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:06,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:17:06,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419120413] [2020-10-14 19:17:06,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:17:06,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:17:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:17:06,828 INFO L87 Difference]: Start difference. First operand 12068 states and 14912 transitions. Second operand 7 states. [2020-10-14 19:17:07,049 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:17:07,332 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:17:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:12,450 INFO L93 Difference]: Finished difference Result 29274 states and 38873 transitions. [2020-10-14 19:17:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:17:12,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-14 19:17:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:12,520 INFO L225 Difference]: With dead ends: 29274 [2020-10-14 19:17:12,521 INFO L226 Difference]: Without dead ends: 17212 [2020-10-14 19:17:12,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:17:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states. [2020-10-14 19:17:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 16748. [2020-10-14 19:17:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16748 states. [2020-10-14 19:17:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16748 states to 16748 states and 20644 transitions. [2020-10-14 19:17:13,077 INFO L78 Accepts]: Start accepts. Automaton has 16748 states and 20644 transitions. Word has length 380 [2020-10-14 19:17:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:13,078 INFO L479 AbstractCegarLoop]: Abstraction has 16748 states and 20644 transitions. [2020-10-14 19:17:13,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:17:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16748 states and 20644 transitions. [2020-10-14 19:17:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-14 19:17:13,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:13,123 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:17:13,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:17:13,123 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 608992070, now seen corresponding path program 1 times [2020-10-14 19:17:13,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:13,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845657354] [2020-10-14 19:17:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 19:17:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:18,452 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:17:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:17:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:17:18,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:17:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:17:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:18,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:17:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:17:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:19,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:17:19,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 19:17:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:19,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:17:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 376 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:17:19,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845657354] [2020-10-14 19:17:19,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:19,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:17:19,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347414926] [2020-10-14 19:17:19,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:17:19,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:19,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:17:19,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:17:19,426 INFO L87 Difference]: Start difference. First operand 16748 states and 20644 transitions. Second operand 9 states. [2020-10-14 19:17:19,557 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:17:21,481 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:17:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:22,173 INFO L93 Difference]: Finished difference Result 33591 states and 41757 transitions. [2020-10-14 19:17:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:17:22,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 411 [2020-10-14 19:17:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:22,219 INFO L225 Difference]: With dead ends: 33591 [2020-10-14 19:17:22,219 INFO L226 Difference]: Without dead ends: 16853 [2020-10-14 19:17:22,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:17:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16853 states. [2020-10-14 19:17:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16853 to 16123. [2020-10-14 19:17:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16123 states. [2020-10-14 19:17:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16123 states to 16123 states and 19033 transitions. [2020-10-14 19:17:22,659 INFO L78 Accepts]: Start accepts. Automaton has 16123 states and 19033 transitions. Word has length 411 [2020-10-14 19:17:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:22,660 INFO L479 AbstractCegarLoop]: Abstraction has 16123 states and 19033 transitions. [2020-10-14 19:17:22,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:17:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 16123 states and 19033 transitions. [2020-10-14 19:17:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-14 19:17:22,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:22,696 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 19:17:22,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:17:22,696 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:22,696 INFO L82 PathProgramCache]: Analyzing trace with hash 86725415, now seen corresponding path program 1 times [2020-10-14 19:17:22,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:22,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131512581] [2020-10-14 19:17:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:27,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:17:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 369 [2020-10-14 19:17:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,045 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:17:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:17:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:17:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:28,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:28,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:17:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 19:17:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:17:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:17:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 508 proven. 158 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:17:30,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131512581] [2020-10-14 19:17:30,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:30,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 19:17:30,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793019921] [2020-10-14 19:17:30,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 19:17:30,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:30,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 19:17:30,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:17:30,169 INFO L87 Difference]: Start difference. First operand 16123 states and 19033 transitions. Second operand 13 states. [2020-10-14 19:17:30,358 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:17:30,661 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:17:32,312 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 151 [2020-10-14 19:17:33,157 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2020-10-14 19:17:33,570 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 146 [2020-10-14 19:17:34,669 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2020-10-14 19:17:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:38,194 INFO L93 Difference]: Finished difference Result 31673 states and 42324 transitions. [2020-10-14 19:17:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 19:17:38,194 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 509 [2020-10-14 19:17:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:38,265 INFO L225 Difference]: With dead ends: 31673 [2020-10-14 19:17:38,265 INFO L226 Difference]: Without dead ends: 16425 [2020-10-14 19:17:38,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 19:17:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16425 states. [2020-10-14 19:17:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16425 to 15485. [2020-10-14 19:17:38,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15485 states. [2020-10-14 19:17:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15485 states to 15485 states and 18210 transitions. [2020-10-14 19:17:38,848 INFO L78 Accepts]: Start accepts. Automaton has 15485 states and 18210 transitions. Word has length 509 [2020-10-14 19:17:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:38,848 INFO L479 AbstractCegarLoop]: Abstraction has 15485 states and 18210 transitions. [2020-10-14 19:17:38,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 19:17:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15485 states and 18210 transitions. [2020-10-14 19:17:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-14 19:17:38,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:38,873 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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] [2020-10-14 19:17:38,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:17:38,873 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2003067380, now seen corresponding path program 1 times [2020-10-14 19:17:38,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:38,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338723510] [2020-10-14 19:17:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:41,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:43,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:43,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 19:17:43,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:44,205 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:44,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:44,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:44,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:44,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:17:44,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 19:17:44,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:44,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:17:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:44,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:44,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:17:44,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:17:44,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:44,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:17:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 19:17:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:44,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:17:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:17:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 19:17:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:44,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:17:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 19:17:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:44,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:44,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 19:17:44,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 19:17:44,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:44,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:17:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:44,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 19:17:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 19:17:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 563 proven. 174 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 19:17:45,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338723510] [2020-10-14 19:17:45,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:45,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:17:45,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855124598] [2020-10-14 19:17:45,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:17:45,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:45,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:17:45,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:17:45,413 INFO L87 Difference]: Start difference. First operand 15485 states and 18210 transitions. Second operand 7 states. [2020-10-14 19:17:45,623 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:17:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:50,315 INFO L93 Difference]: Finished difference Result 40476 states and 49949 transitions. [2020-10-14 19:17:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:17:50,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-14 19:17:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:50,403 INFO L225 Difference]: With dead ends: 40476 [2020-10-14 19:17:50,404 INFO L226 Difference]: Without dead ends: 26565 [2020-10-14 19:17:50,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:17:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26565 states. [2020-10-14 19:17:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26565 to 26140. [2020-10-14 19:17:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26140 states. [2020-10-14 19:17:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26140 states to 26140 states and 30848 transitions. [2020-10-14 19:17:51,084 INFO L78 Accepts]: Start accepts. Automaton has 26140 states and 30848 transitions. Word has length 559 [2020-10-14 19:17:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:51,085 INFO L479 AbstractCegarLoop]: Abstraction has 26140 states and 30848 transitions. [2020-10-14 19:17:51,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:17:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 26140 states and 30848 transitions. [2020-10-14 19:17:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-14 19:17:51,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:51,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:17:51,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:17:51,133 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:51,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:51,134 INFO L82 PathProgramCache]: Analyzing trace with hash 375271740, now seen corresponding path program 1 times [2020-10-14 19:17:51,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:51,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439377522] [2020-10-14 19:17:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:56,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:56,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-14 19:17:56,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:17:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:17:56,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:56,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 19:17:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 19:17:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:56,509 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:56,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:56,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:17:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:17:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:56,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:56,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:17:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:56,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 19:17:56,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 19:17:56,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:56,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:17:56,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 19:17:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:57,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:57,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 19:17:57,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 19:17:57,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:57,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:17:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 19:17:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:57,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 19:17:57,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:57,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 552 proven. 122 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 19:17:57,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439377522] [2020-10-14 19:17:57,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:57,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:17:57,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549456000] [2020-10-14 19:17:57,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:17:57,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:17:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:17:57,736 INFO L87 Difference]: Start difference. First operand 26140 states and 30848 transitions. Second operand 7 states. [2020-10-14 19:17:57,859 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:17:59,183 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:00,443 INFO L93 Difference]: Finished difference Result 48574 states and 57329 transitions. [2020-10-14 19:18:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:18:00,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-14 19:18:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:00,493 INFO L225 Difference]: With dead ends: 48574 [2020-10-14 19:18:00,493 INFO L226 Difference]: Without dead ends: 29522 [2020-10-14 19:18:00,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:18:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29522 states. [2020-10-14 19:18:01,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29522 to 29484. [2020-10-14 19:18:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29484 states. [2020-10-14 19:18:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29484 states to 29484 states and 34411 transitions. [2020-10-14 19:18:01,144 INFO L78 Accepts]: Start accepts. Automaton has 29484 states and 34411 transitions. Word has length 560 [2020-10-14 19:18:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:01,146 INFO L479 AbstractCegarLoop]: Abstraction has 29484 states and 34411 transitions. [2020-10-14 19:18:01,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:18:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 29484 states and 34411 transitions. [2020-10-14 19:18:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-14 19:18:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:01,220 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:18:01,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:18:01,221 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:01,221 INFO L82 PathProgramCache]: Analyzing trace with hash -729721436, now seen corresponding path program 1 times [2020-10-14 19:18:01,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782214600] [2020-10-14 19:18:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 325 [2020-10-14 19:18:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:06,668 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:18:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:18:06,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:06,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:18:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:18:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:07,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:18:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:18:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:07,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:07,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:18:07,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:18:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 19:18:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:07,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:18:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-14 19:18:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:07,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:07,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 19:18:07,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 19:18:07,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:07,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:18:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-14 19:18:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:07,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:07,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:18:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 629 proven. 180 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-10-14 19:18:08,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782214600] [2020-10-14 19:18:08,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:08,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:18:08,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430880915] [2020-10-14 19:18:08,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:18:08,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:08,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:18:08,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:18:08,131 INFO L87 Difference]: Start difference. First operand 29484 states and 34411 transitions. Second operand 7 states. [2020-10-14 19:18:08,260 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:08,988 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:11,004 INFO L93 Difference]: Finished difference Result 54817 states and 64205 transitions. [2020-10-14 19:18:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:18:11,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 602 [2020-10-14 19:18:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:11,055 INFO L225 Difference]: With dead ends: 54817 [2020-10-14 19:18:11,055 INFO L226 Difference]: Without dead ends: 27831 [2020-10-14 19:18:11,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:18:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27831 states. [2020-10-14 19:18:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27831 to 27737. [2020-10-14 19:18:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27737 states. [2020-10-14 19:18:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27737 states to 27737 states and 31768 transitions. [2020-10-14 19:18:11,654 INFO L78 Accepts]: Start accepts. Automaton has 27737 states and 31768 transitions. Word has length 602 [2020-10-14 19:18:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:11,655 INFO L479 AbstractCegarLoop]: Abstraction has 27737 states and 31768 transitions. [2020-10-14 19:18:11,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:18:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 27737 states and 31768 transitions. [2020-10-14 19:18:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-14 19:18:11,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:11,705 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:18:11,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:18:11,705 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash -673019510, now seen corresponding path program 1 times [2020-10-14 19:18:11,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:11,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989182210] [2020-10-14 19:18:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:16,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:16,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-14 19:18:16,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:18:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 19:18:16,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:16,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:18:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 19:18:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 290 [2020-10-14 19:18:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:17,091 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:17,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:17,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:17,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:18:17,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:17,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:17,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 19:18:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:18:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:17,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:18:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:18:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:18:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:18:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:18:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 19:18:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:17,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:17,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:18:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:18:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 19:18:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:18,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:18:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 19:18:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:18,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 669 proven. 435 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 19:18:19,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989182210] [2020-10-14 19:18:19,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:19,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 19:18:19,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96828631] [2020-10-14 19:18:19,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 19:18:19,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 19:18:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-14 19:18:19,310 INFO L87 Difference]: Start difference. First operand 27737 states and 31768 transitions. Second operand 18 states. [2020-10-14 19:18:19,494 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:18:19,939 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 132 [2020-10-14 19:18:21,088 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:21,807 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 136 [2020-10-14 19:18:22,627 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 19:18:23,220 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-14 19:18:23,587 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:18:24,049 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2020-10-14 19:18:24,879 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-14 19:18:25,404 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-14 19:18:25,538 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-14 19:18:26,039 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 135 [2020-10-14 19:18:26,308 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-14 19:18:26,870 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2020-10-14 19:18:27,635 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2020-10-14 19:18:28,404 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 19:18:28,964 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 138 [2020-10-14 19:18:30,469 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 19:18:31,432 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:32,025 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 19:18:32,656 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-14 19:18:33,042 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-10-14 19:18:33,661 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 151 [2020-10-14 19:18:33,957 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-14 19:18:34,310 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-10-14 19:18:35,403 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 139 [2020-10-14 19:18:36,874 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 136 [2020-10-14 19:18:37,211 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 19:18:38,747 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2020-10-14 19:18:39,623 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-14 19:18:41,780 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2020-10-14 19:18:43,089 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2020-10-14 19:18:43,304 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:18:45,152 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-14 19:18:46,934 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 19:18:48,418 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-10-14 19:18:49,752 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 151 [2020-10-14 19:18:51,206 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 138 [2020-10-14 19:18:52,256 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 137 [2020-10-14 19:18:53,614 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2020-10-14 19:18:54,263 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 138 [2020-10-14 19:18:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:58,866 INFO L93 Difference]: Finished difference Result 182745 states and 231943 transitions. [2020-10-14 19:18:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2020-10-14 19:18:58,867 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 620 [2020-10-14 19:18:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:59,331 INFO L225 Difference]: With dead ends: 182745 [2020-10-14 19:18:59,331 INFO L226 Difference]: Without dead ends: 157497 [2020-10-14 19:18:59,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9055 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=3799, Invalid=17957, Unknown=0, NotChecked=0, Total=21756 [2020-10-14 19:18:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157497 states. [2020-10-14 19:19:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157497 to 154204. [2020-10-14 19:19:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154204 states. [2020-10-14 19:19:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154204 states to 154204 states and 185601 transitions. [2020-10-14 19:19:04,737 INFO L78 Accepts]: Start accepts. Automaton has 154204 states and 185601 transitions. Word has length 620 [2020-10-14 19:19:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:04,738 INFO L479 AbstractCegarLoop]: Abstraction has 154204 states and 185601 transitions. [2020-10-14 19:19:04,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 19:19:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 154204 states and 185601 transitions. [2020-10-14 19:19:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-14 19:19:05,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:05,049 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 19:19:05,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:19:05,049 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:05,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:05,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1789648327, now seen corresponding path program 1 times [2020-10-14 19:19:05,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:05,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030943585] [2020-10-14 19:19:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:10,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:10,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-14 19:19:10,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 527 [2020-10-14 19:19:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:10,437 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:19:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:10,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:10,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:19:10,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:10,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:19:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:19:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 19:19:10,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 19:19:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:10,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 19:19:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 19:19:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:19:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 19:19:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:11,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:11,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:19:11,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 19:19:11,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:11,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:19:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:11,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:19:11,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 19:19:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:19:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-14 19:19:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 19:19:11,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 19:19:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 604 proven. 525 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-14 19:19:13,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030943585] [2020-10-14 19:19:13,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:13,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:19:13,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138864873] [2020-10-14 19:19:13,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:19:13,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:19:13,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:19:13,004 INFO L87 Difference]: Start difference. First operand 154204 states and 185601 transitions. Second operand 11 states. [2020-10-14 19:19:13,147 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:19:13,437 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:19:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:18,555 INFO L93 Difference]: Finished difference Result 288551 states and 347619 transitions. [2020-10-14 19:19:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:19:18,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 661 [2020-10-14 19:19:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.