/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:30,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:30,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:30,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:30,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:30,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:30,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:30,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:30,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:30,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:30,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:30,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:30,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:30,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:30,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:30,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:30,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:30,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:30,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:30,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:30,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:30,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:30,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:30,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:30,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:30,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:30,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:30,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:30,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:30,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:30,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:30,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:30,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:30,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:30,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:30,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:30,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:30,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:30,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:30,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:30,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:30,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:25:30,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:30,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:30,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:30,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:30,955 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:30,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:30,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:30,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:30,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:30,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:30,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:30,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:30,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:30,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:30,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:30,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:30,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:30,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:30,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:30,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:30,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:30,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:30,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:30,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:30,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:30,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:30,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:30,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:30,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:30,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:25:31,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:31,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:31,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:31,298 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:31,299 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:31,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2020-10-13 06:25:31,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01c1fab55/cf45d15cc072444683e3a5de34b87ced/FLAG27bd35526 [2020-10-13 06:25:31,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:31,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2020-10-13 06:25:32,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01c1fab55/cf45d15cc072444683e3a5de34b87ced/FLAG27bd35526 [2020-10-13 06:25:32,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01c1fab55/cf45d15cc072444683e3a5de34b87ced [2020-10-13 06:25:32,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:32,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:32,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:32,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:32,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:32,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:32" (1/1) ... [2020-10-13 06:25:32,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:32, skipping insertion in model container [2020-10-13 06:25:32,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:32" (1/1) ... [2020-10-13 06:25:32,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:32,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:33,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:33,156 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:33,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:33,557 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:33,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33 WrapperNode [2020-10-13 06:25:33,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:33,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:33,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:33,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:33,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... [2020-10-13 06:25:33,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:33,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:33,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:33,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:33,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:33,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:33,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:33,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:33,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:33,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:35,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:35,655 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:35,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:35 BoogieIcfgContainer [2020-10-13 06:25:35,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:35,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:35,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:35,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:35,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:32" (1/3) ... [2020-10-13 06:25:35,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f41101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:35, skipping insertion in model container [2020-10-13 06:25:35,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:33" (2/3) ... [2020-10-13 06:25:35,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f41101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:35, skipping insertion in model container [2020-10-13 06:25:35,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:35" (3/3) ... [2020-10-13 06:25:35,679 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2020-10-13 06:25:35,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:35,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:35,718 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:35,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:35,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:35,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:35,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:35,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:35,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:35,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:35,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 06:25:35,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:35,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:35,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1738397325, now seen corresponding path program 1 times [2020-10-13 06:25:35,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:35,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079576704] [2020-10-13 06:25:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:39,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:39,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 06:25:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3722 [2020-10-13 06:25:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:25:41,151 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:25:41,432 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2020-10-13 06:25:41,700 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2020-10-13 06:25:41,976 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2020-10-13 06:25:42,257 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2020-10-13 06:25:42,441 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2020-10-13 06:25:42,586 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:42,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:25:42,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:43,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079576704] [2020-10-13 06:25:43,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:43,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:25:43,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879467195] [2020-10-13 06:25:43,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:25:43,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:43,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:25:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:43,355 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:25:43,697 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:25:44,328 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:25:44,938 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:25:45,677 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-13 06:25:46,754 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-13 06:25:48,033 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 192 [2020-10-13 06:25:49,479 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-10-13 06:25:52,422 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 186 [2020-10-13 06:25:53,550 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 182 [2020-10-13 06:25:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:56,133 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:56,135 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 160 [2020-10-13 06:25:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:56,154 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:56,154 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:56,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:25:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:56,239 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 160 [2020-10-13 06:25:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:56,240 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:56,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:25:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 06:25:56,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:56,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:56,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:56,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1633476922, now seen corresponding path program 1 times [2020-10-13 06:25:56,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:56,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763923551] [2020-10-13 06:25:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 06:26:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4896 [2020-10-13 06:26:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-13 06:26:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:01,544 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:01,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:26:01,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:01,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:26:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:26:01,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:01,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763923551] [2020-10-13 06:26:01,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:01,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:01,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768215441] [2020-10-13 06:26:01,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:01,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:01,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:01,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:01,909 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:26:02,113 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:04,555 INFO L93 Difference]: Finished difference Result 834 states and 1296 transitions. [2020-10-13 06:26:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:04,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 06:26:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:04,565 INFO L225 Difference]: With dead ends: 834 [2020-10-13 06:26:04,566 INFO L226 Difference]: Without dead ends: 591 [2020-10-13 06:26:04,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:04,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-13 06:26:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2020-10-13 06:26:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-13 06:26:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 843 transitions. [2020-10-13 06:26:04,609 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 843 transitions. Word has length 171 [2020-10-13 06:26:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:04,610 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 843 transitions. [2020-10-13 06:26:04,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 843 transitions. [2020-10-13 06:26:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 06:26:04,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:04,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:04,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:26:04,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:04,624 INFO L82 PathProgramCache]: Analyzing trace with hash -156895470, now seen corresponding path program 1 times [2020-10-13 06:26:04,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:04,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678866394] [2020-10-13 06:26:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 06:26:06,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1994 [2020-10-13 06:26:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-13 06:26:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:07,017 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:07,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:07,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:07,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:26:07,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:07,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:07,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:07,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:26:07,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:07,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678866394] [2020-10-13 06:26:07,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:07,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:07,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223441303] [2020-10-13 06:26:07,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:07,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:07,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:07,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:07,227 INFO L87 Difference]: Start difference. First operand 589 states and 843 transitions. Second operand 5 states. [2020-10-13 06:26:07,535 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:10,375 INFO L93 Difference]: Finished difference Result 1482 states and 2227 transitions. [2020-10-13 06:26:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:10,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 06:26:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:10,384 INFO L225 Difference]: With dead ends: 1482 [2020-10-13 06:26:10,384 INFO L226 Difference]: Without dead ends: 1014 [2020-10-13 06:26:10,386 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 [2020-10-13 06:26:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-13 06:26:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1013. [2020-10-13 06:26:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-13 06:26:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1406 transitions. [2020-10-13 06:26:10,443 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1406 transitions. Word has length 181 [2020-10-13 06:26:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:10,444 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1406 transitions. [2020-10-13 06:26:10,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1406 transitions. [2020-10-13 06:26:10,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 06:26:10,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:10,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:10,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:26:10,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1134758807, now seen corresponding path program 1 times [2020-10-13 06:26:10,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:10,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173977007] [2020-10-13 06:26:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 06:26:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2107 [2020-10-13 06:26:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:12,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:26:12,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:12,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:26:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:26:12,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:13,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173977007] [2020-10-13 06:26:13,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:13,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:13,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169055505] [2020-10-13 06:26:13,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:13,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:13,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:13,027 INFO L87 Difference]: Start difference. First operand 1013 states and 1406 transitions. Second operand 7 states. [2020-10-13 06:26:13,354 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:16,437 INFO L93 Difference]: Finished difference Result 2852 states and 4416 transitions. [2020-10-13 06:26:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:16,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-13 06:26:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:16,456 INFO L225 Difference]: With dead ends: 2852 [2020-10-13 06:26:16,457 INFO L226 Difference]: Without dead ends: 1960 [2020-10-13 06:26:16,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-10-13 06:26:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1877. [2020-10-13 06:26:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-13 06:26:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2464 transitions. [2020-10-13 06:26:16,565 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2464 transitions. Word has length 191 [2020-10-13 06:26:16,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:16,566 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2464 transitions. [2020-10-13 06:26:16,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2464 transitions. [2020-10-13 06:26:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 06:26:16,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:16,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:16,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:16,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:16,576 INFO L82 PathProgramCache]: Analyzing trace with hash 69909447, now seen corresponding path program 1 times [2020-10-13 06:26:16,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:16,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435991504] [2020-10-13 06:26:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 06:26:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3904 [2020-10-13 06:26:20,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:20,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:20,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:20,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:26:20,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 06:26:20,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:26:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:26:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:20,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435991504] [2020-10-13 06:26:20,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:20,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:20,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497395583] [2020-10-13 06:26:20,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:20,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:20,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:20,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:20,942 INFO L87 Difference]: Start difference. First operand 1877 states and 2464 transitions. Second operand 7 states. [2020-10-13 06:26:21,083 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:21,670 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:24,107 INFO L93 Difference]: Finished difference Result 4533 states and 6313 transitions. [2020-10-13 06:26:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:24,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-13 06:26:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:24,123 INFO L225 Difference]: With dead ends: 4533 [2020-10-13 06:26:24,123 INFO L226 Difference]: Without dead ends: 2777 [2020-10-13 06:26:24,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2020-10-13 06:26:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2739. [2020-10-13 06:26:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2020-10-13 06:26:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3469 transitions. [2020-10-13 06:26:24,220 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3469 transitions. Word has length 201 [2020-10-13 06:26:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:24,221 INFO L479 AbstractCegarLoop]: Abstraction has 2739 states and 3469 transitions. [2020-10-13 06:26:24,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3469 transitions. [2020-10-13 06:26:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 06:26:24,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:24,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:24,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:26:24,230 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1994100799, now seen corresponding path program 1 times [2020-10-13 06:26:24,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:24,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727678052] [2020-10-13 06:26:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:26,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 06:26:26,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949 [2020-10-13 06:26:26,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:26:26,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:26,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:26,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:26,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:26,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:26,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:26,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:26:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:26,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:26:26,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 06:26:26,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:26:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:26,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727678052] [2020-10-13 06:26:26,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:26,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:26,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73790508] [2020-10-13 06:26:26,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:26,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:26,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:26,712 INFO L87 Difference]: Start difference. First operand 2739 states and 3469 transitions. Second operand 7 states. [2020-10-13 06:26:26,859 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:27,302 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:29,773 INFO L93 Difference]: Finished difference Result 5464 states and 7142 transitions. [2020-10-13 06:26:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:29,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-13 06:26:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:29,788 INFO L225 Difference]: With dead ends: 5464 [2020-10-13 06:26:29,788 INFO L226 Difference]: Without dead ends: 2846 [2020-10-13 06:26:29,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2020-10-13 06:26:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2797. [2020-10-13 06:26:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2020-10-13 06:26:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3434 transitions. [2020-10-13 06:26:29,871 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3434 transitions. Word has length 205 [2020-10-13 06:26:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:29,871 INFO L479 AbstractCegarLoop]: Abstraction has 2797 states and 3434 transitions. [2020-10-13 06:26:29,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3434 transitions. [2020-10-13 06:26:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 06:26:29,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:29,880 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:26:29,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:26:29,880 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:29,881 INFO L82 PathProgramCache]: Analyzing trace with hash 831161727, now seen corresponding path program 1 times [2020-10-13 06:26:29,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:29,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16966328] [2020-10-13 06:26:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 06:26:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:26:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 06:26:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:26:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:26:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:35,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:35,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:35,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:26:35,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:26:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:26:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:26:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:26:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:26:35,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:26:35,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:26:35,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16966328] [2020-10-13 06:26:35,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:35,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:35,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086843612] [2020-10-13 06:26:35,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:35,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:35,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:35,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:35,408 INFO L87 Difference]: Start difference. First operand 2797 states and 3434 transitions. Second operand 7 states. [2020-10-13 06:26:35,686 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:36,081 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:40,281 INFO L93 Difference]: Finished difference Result 10951 states and 14552 transitions. [2020-10-13 06:26:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:40,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-13 06:26:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:40,325 INFO L225 Difference]: With dead ends: 10951 [2020-10-13 06:26:40,325 INFO L226 Difference]: Without dead ends: 8275 [2020-10-13 06:26:40,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2020-10-13 06:26:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8255. [2020-10-13 06:26:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8255 states. [2020-10-13 06:26:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8255 states to 8255 states and 10945 transitions. [2020-10-13 06:26:40,583 INFO L78 Accepts]: Start accepts. Automaton has 8255 states and 10945 transitions. Word has length 215 [2020-10-13 06:26:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:40,583 INFO L479 AbstractCegarLoop]: Abstraction has 8255 states and 10945 transitions. [2020-10-13 06:26:40,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8255 states and 10945 transitions. [2020-10-13 06:26:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 06:26:40,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:40,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:40,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:40,621 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1480986663, now seen corresponding path program 1 times [2020-10-13 06:26:40,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:40,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340706706] [2020-10-13 06:26:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:46,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:26:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:46,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:26:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 06:26:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:26:46,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 06:26:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 86 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:26:46,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340706706] [2020-10-13 06:26:46,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:46,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:46,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695055986] [2020-10-13 06:26:46,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:46,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:46,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:46,219 INFO L87 Difference]: Start difference. First operand 8255 states and 10945 transitions. Second operand 7 states. [2020-10-13 06:26:46,571 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:47,058 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:49,692 INFO L93 Difference]: Finished difference Result 24974 states and 38101 transitions. [2020-10-13 06:26:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:49,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-13 06:26:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:49,841 INFO L225 Difference]: With dead ends: 24974 [2020-10-13 06:26:49,842 INFO L226 Difference]: Without dead ends: 16840 [2020-10-13 06:26:49,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:26:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16840 states. [2020-10-13 06:26:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16840 to 16221. [2020-10-13 06:26:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16221 states. [2020-10-13 06:26:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16221 states to 16221 states and 21078 transitions. [2020-10-13 06:26:50,519 INFO L78 Accepts]: Start accepts. Automaton has 16221 states and 21078 transitions. Word has length 235 [2020-10-13 06:26:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:50,519 INFO L479 AbstractCegarLoop]: Abstraction has 16221 states and 21078 transitions. [2020-10-13 06:26:50,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16221 states and 21078 transitions. [2020-10-13 06:26:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 06:26:50,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:50,583 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:26:50,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:26:50,584 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:50,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1039469043, now seen corresponding path program 1 times [2020-10-13 06:26:50,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:50,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499959343] [2020-10-13 06:26:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:55,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 06:26:55,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:26:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:26:55,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:55,916 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:55,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:55,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:55,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:55,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:55,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:55,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:56,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:56,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:56,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:26:56,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:26:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:56,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:26:56,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 06:26:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:56,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:56,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 06:26:56,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:26:56,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 06:26:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 101 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 06:26:56,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499959343] [2020-10-13 06:26:56,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:56,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:56,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219013477] [2020-10-13 06:26:56,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:56,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:56,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:56,291 INFO L87 Difference]: Start difference. First operand 16221 states and 21078 transitions. Second operand 7 states. [2020-10-13 06:26:56,433 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:58,201 INFO L93 Difference]: Finished difference Result 31393 states and 41184 transitions. [2020-10-13 06:26:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:58,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-13 06:26:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:58,264 INFO L225 Difference]: With dead ends: 31393 [2020-10-13 06:26:58,264 INFO L226 Difference]: Without dead ends: 15293 [2020-10-13 06:26:58,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:26:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15293 states. [2020-10-13 06:26:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15293 to 14849. [2020-10-13 06:26:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14849 states. [2020-10-13 06:26:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14849 states to 14849 states and 18888 transitions. [2020-10-13 06:26:58,698 INFO L78 Accepts]: Start accepts. Automaton has 14849 states and 18888 transitions. Word has length 249 [2020-10-13 06:26:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:58,698 INFO L479 AbstractCegarLoop]: Abstraction has 14849 states and 18888 transitions. [2020-10-13 06:26:58,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14849 states and 18888 transitions. [2020-10-13 06:26:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 06:26:58,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:58,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:58,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:26:58,748 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1515559584, now seen corresponding path program 1 times [2020-10-13 06:26:58,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:58,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35982995] [2020-10-13 06:26:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:59,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 06:27:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3725 [2020-10-13 06:27:02,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:27:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 06:27:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,724 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:02,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:27:02,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:27:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:03,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:27:03,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 06:27:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 06:27:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:03,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35982995] [2020-10-13 06:27:03,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:03,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:03,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845463524] [2020-10-13 06:27:03,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:03,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:03,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:03,121 INFO L87 Difference]: Start difference. First operand 14849 states and 18888 transitions. Second operand 7 states. [2020-10-13 06:27:03,334 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:27:04,266 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:06,803 INFO L93 Difference]: Finished difference Result 32403 states and 44377 transitions. [2020-10-13 06:27:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:06,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-13 06:27:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:06,895 INFO L225 Difference]: With dead ends: 32403 [2020-10-13 06:27:06,895 INFO L226 Difference]: Without dead ends: 17675 [2020-10-13 06:27:06,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17675 states. [2020-10-13 06:27:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17675 to 17054. [2020-10-13 06:27:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17054 states. [2020-10-13 06:27:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17054 states to 17054 states and 21607 transitions. [2020-10-13 06:27:07,453 INFO L78 Accepts]: Start accepts. Automaton has 17054 states and 21607 transitions. Word has length 249 [2020-10-13 06:27:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:07,453 INFO L479 AbstractCegarLoop]: Abstraction has 17054 states and 21607 transitions. [2020-10-13 06:27:07,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17054 states and 21607 transitions. [2020-10-13 06:27:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 06:27:07,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:07,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:07,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:27:07,494 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:07,495 INFO L82 PathProgramCache]: Analyzing trace with hash -929316081, now seen corresponding path program 1 times [2020-10-13 06:27:07,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:07,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507633286] [2020-10-13 06:27:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 06:27:12,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 06:27:12,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 06:27:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:27:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:12,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:27:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:12,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 06:27:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:27:12,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:27:13,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507633286] [2020-10-13 06:27:13,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:13,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:13,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948023044] [2020-10-13 06:27:13,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:13,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:13,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:13,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:13,026 INFO L87 Difference]: Start difference. First operand 17054 states and 21607 transitions. Second operand 7 states. [2020-10-13 06:27:13,220 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:13,428 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:16,416 INFO L93 Difference]: Finished difference Result 34946 states and 45702 transitions. [2020-10-13 06:27:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:16,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-13 06:27:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:16,479 INFO L225 Difference]: With dead ends: 34946 [2020-10-13 06:27:16,479 INFO L226 Difference]: Without dead ends: 18013 [2020-10-13 06:27:16,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:16,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18013 states. [2020-10-13 06:27:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18013 to 17668. [2020-10-13 06:27:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17668 states. [2020-10-13 06:27:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17668 states to 17668 states and 21452 transitions. [2020-10-13 06:27:16,911 INFO L78 Accepts]: Start accepts. Automaton has 17668 states and 21452 transitions. Word has length 260 [2020-10-13 06:27:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:16,912 INFO L479 AbstractCegarLoop]: Abstraction has 17668 states and 21452 transitions. [2020-10-13 06:27:16,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 17668 states and 21452 transitions. [2020-10-13 06:27:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 06:27:16,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:16,931 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:16,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:27:16,931 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash -793557975, now seen corresponding path program 1 times [2020-10-13 06:27:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043332792] [2020-10-13 06:27:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:21,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,156 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:22,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:22,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:27:22,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:27:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:27:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 06:27:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 06:27:22,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043332792] [2020-10-13 06:27:22,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:22,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:22,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992348780] [2020-10-13 06:27:22,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:22,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:22,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:22,460 INFO L87 Difference]: Start difference. First operand 17668 states and 21452 transitions. Second operand 7 states. [2020-10-13 06:27:22,786 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:23,189 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:27,576 INFO L93 Difference]: Finished difference Result 66463 states and 93435 transitions. [2020-10-13 06:27:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:27,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-13 06:27:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:27,800 INFO L225 Difference]: With dead ends: 66463 [2020-10-13 06:27:27,801 INFO L226 Difference]: Without dead ends: 50451 [2020-10-13 06:27:27,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50451 states. [2020-10-13 06:27:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50451 to 48665. [2020-10-13 06:27:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48665 states. [2020-10-13 06:27:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48665 states to 48665 states and 62058 transitions. [2020-10-13 06:27:28,999 INFO L78 Accepts]: Start accepts. Automaton has 48665 states and 62058 transitions. Word has length 279 [2020-10-13 06:27:29,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:29,000 INFO L479 AbstractCegarLoop]: Abstraction has 48665 states and 62058 transitions. [2020-10-13 06:27:29,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 48665 states and 62058 transitions. [2020-10-13 06:27:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 06:27:29,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:29,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:29,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:27:29,053 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:29,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 587169476, now seen corresponding path program 1 times [2020-10-13 06:27:29,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:29,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304657096] [2020-10-13 06:27:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:29,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 06:27:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4470 [2020-10-13 06:27:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:27:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:27:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:33,936 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:33,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:27:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:27:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:27:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 06:27:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 06:27:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:34,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304657096] [2020-10-13 06:27:34,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:34,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:34,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180828487] [2020-10-13 06:27:34,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:34,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:34,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:34,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:34,517 INFO L87 Difference]: Start difference. First operand 48665 states and 62058 transitions. Second operand 7 states. [2020-10-13 06:27:34,831 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:35,793 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:38,090 INFO L93 Difference]: Finished difference Result 111924 states and 142153 transitions. [2020-10-13 06:27:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:27:38,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-13 06:27:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:38,324 INFO L225 Difference]: With dead ends: 111924 [2020-10-13 06:27:38,324 INFO L226 Difference]: Without dead ends: 62398 [2020-10-13 06:27:38,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:27:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62398 states. [2020-10-13 06:27:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62398 to 62027. [2020-10-13 06:27:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62027 states. [2020-10-13 06:27:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62027 states to 62027 states and 76026 transitions. [2020-10-13 06:27:41,758 INFO L78 Accepts]: Start accepts. Automaton has 62027 states and 76026 transitions. Word has length 279 [2020-10-13 06:27:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:41,759 INFO L479 AbstractCegarLoop]: Abstraction has 62027 states and 76026 transitions. [2020-10-13 06:27:41,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 62027 states and 76026 transitions. [2020-10-13 06:27:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-13 06:27:41,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:41,837 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:41,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:27:41,838 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:41,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1444880081, now seen corresponding path program 1 times [2020-10-13 06:27:41,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:41,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177744098] [2020-10-13 06:27:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:46,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 06:27:46,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:27:46,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:27:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:27:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 06:27:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:47,147 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:47,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:27:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:47,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:47,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:47,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:27:47,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:47,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:27:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:47,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 06:27:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:47,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 123 proven. 45 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:47,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177744098] [2020-10-13 06:27:47,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:47,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:27:47,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072821899] [2020-10-13 06:27:47,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:27:47,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:47,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:27:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:27:47,575 INFO L87 Difference]: Start difference. First operand 62027 states and 76026 transitions. Second operand 8 states. [2020-10-13 06:27:47,724 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:49,290 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:27:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:52,198 INFO L93 Difference]: Finished difference Result 146390 states and 181849 transitions. [2020-10-13 06:27:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:27:52,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-10-13 06:27:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:52,518 INFO L225 Difference]: With dead ends: 146390 [2020-10-13 06:27:52,518 INFO L226 Difference]: Without dead ends: 86447 [2020-10-13 06:27:52,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:27:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86447 states. [2020-10-13 06:27:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86447 to 83289. [2020-10-13 06:27:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83289 states. [2020-10-13 06:27:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83289 states to 83289 states and 103444 transitions. [2020-10-13 06:27:54,227 INFO L78 Accepts]: Start accepts. Automaton has 83289 states and 103444 transitions. Word has length 287 [2020-10-13 06:27:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:54,228 INFO L479 AbstractCegarLoop]: Abstraction has 83289 states and 103444 transitions. [2020-10-13 06:27:54,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:27:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 83289 states and 103444 transitions. [2020-10-13 06:27:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 06:27:54,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:54,278 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:54,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:27:54,278 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:54,278 INFO L82 PathProgramCache]: Analyzing trace with hash -399565956, now seen corresponding path program 1 times [2020-10-13 06:27:54,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:54,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948328672] [2020-10-13 06:27:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 06:27:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:27:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4177 [2020-10-13 06:27:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:27:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:27:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:27:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:58,663 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:58,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:58,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:58,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:27:58,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:27:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:27:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:27:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:27:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 06:27:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 124 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:27:59,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948328672] [2020-10-13 06:27:59,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:59,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:59,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146094743] [2020-10-13 06:27:59,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:59,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:59,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:59,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:59,062 INFO L87 Difference]: Start difference. First operand 83289 states and 103444 transitions. Second operand 7 states. [2020-10-13 06:27:59,199 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:00,559 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:28:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:03,114 INFO L93 Difference]: Finished difference Result 185994 states and 225922 transitions. [2020-10-13 06:28:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:28:03,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-13 06:28:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:03,395 INFO L225 Difference]: With dead ends: 185994 [2020-10-13 06:28:03,395 INFO L226 Difference]: Without dead ends: 105689 [2020-10-13 06:28:03,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:28:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105689 states. [2020-10-13 06:28:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105689 to 105150. [2020-10-13 06:28:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105150 states. [2020-10-13 06:28:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105150 states to 105150 states and 128698 transitions. [2020-10-13 06:28:05,607 INFO L78 Accepts]: Start accepts. Automaton has 105150 states and 128698 transitions. Word has length 290 [2020-10-13 06:28:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:05,608 INFO L479 AbstractCegarLoop]: Abstraction has 105150 states and 128698 transitions. [2020-10-13 06:28:05,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 105150 states and 128698 transitions. [2020-10-13 06:28:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 06:28:05,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:05,660 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, 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] [2020-10-13 06:28:05,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:28:05,660 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:05,661 INFO L82 PathProgramCache]: Analyzing trace with hash -435253996, now seen corresponding path program 1 times [2020-10-13 06:28:05,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:05,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988825241] [2020-10-13 06:28:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:10,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 06:28:10,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:10,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4375 [2020-10-13 06:28:10,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:28:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:28:10,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 06:28:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:10,284 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:10,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:10,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:10,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:28:10,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:10,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:10,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:10,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:28:10,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:28:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:10,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 06:28:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:28:10,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988825241] [2020-10-13 06:28:10,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:10,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:28:10,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649577521] [2020-10-13 06:28:10,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:10,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:10,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:10,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:10,785 INFO L87 Difference]: Start difference. First operand 105150 states and 128698 transitions. Second operand 7 states. [2020-10-13 06:28:10,928 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:16,488 INFO L93 Difference]: Finished difference Result 280970 states and 362241 transitions. [2020-10-13 06:28:16,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:28:16,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-13 06:28:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:17,274 INFO L225 Difference]: With dead ends: 280970 [2020-10-13 06:28:17,274 INFO L226 Difference]: Without dead ends: 177913 [2020-10-13 06:28:17,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:28:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177913 states. [2020-10-13 06:28:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177913 to 173439. [2020-10-13 06:28:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173439 states. [2020-10-13 06:28:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173439 states to 173439 states and 214435 transitions. [2020-10-13 06:28:24,493 INFO L78 Accepts]: Start accepts. Automaton has 173439 states and 214435 transitions. Word has length 298 [2020-10-13 06:28:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:24,494 INFO L479 AbstractCegarLoop]: Abstraction has 173439 states and 214435 transitions. [2020-10-13 06:28:24,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 173439 states and 214435 transitions. [2020-10-13 06:28:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 06:28:24,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:24,541 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:24,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:28:24,541 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:24,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1491773813, now seen corresponding path program 1 times [2020-10-13 06:28:24,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:24,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228791476] [2020-10-13 06:28:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:29,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:29,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:28:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:29,796 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:28:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:29,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:29,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:28:29,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:28:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:30,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:30,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:28:30,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:30,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:28:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:30,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:30,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 141 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:28:30,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228791476] [2020-10-13 06:28:30,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:30,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:28:30,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633961578] [2020-10-13 06:28:30,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:28:30,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:30,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:28:30,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:28:30,260 INFO L87 Difference]: Start difference. First operand 173439 states and 214435 transitions. Second operand 8 states. [2020-10-13 06:28:30,392 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:31,708 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:28:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:35,923 INFO L93 Difference]: Finished difference Result 361859 states and 439856 transitions. [2020-10-13 06:28:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:28:35,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 301 [2020-10-13 06:28:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:36,579 INFO L225 Difference]: With dead ends: 361859 [2020-10-13 06:28:36,579 INFO L226 Difference]: Without dead ends: 202221 [2020-10-13 06:28:36,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:28:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202221 states. [2020-10-13 06:28:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202221 to 200989. [2020-10-13 06:28:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200989 states. [2020-10-13 06:28:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200989 states to 200989 states and 245665 transitions. [2020-10-13 06:28:45,407 INFO L78 Accepts]: Start accepts. Automaton has 200989 states and 245665 transitions. Word has length 301 [2020-10-13 06:28:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:45,407 INFO L479 AbstractCegarLoop]: Abstraction has 200989 states and 245665 transitions. [2020-10-13 06:28:45,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:28:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 200989 states and 245665 transitions. [2020-10-13 06:28:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-13 06:28:45,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:45,445 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, 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] [2020-10-13 06:28:45,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:28:45,445 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2131309922, now seen corresponding path program 1 times [2020-10-13 06:28:45,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:45,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046208745] [2020-10-13 06:28:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 06:28:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:28:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5181 [2020-10-13 06:28:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:28:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:28:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 06:28:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:50,857 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:50,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:50,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:50,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:50,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:28:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:28:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:50,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:28:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:51,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 06:28:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:28:51,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046208745] [2020-10-13 06:28:51,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:51,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:28:51,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756369701] [2020-10-13 06:28:51,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:51,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:51,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:51,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:51,455 INFO L87 Difference]: Start difference. First operand 200989 states and 245665 transitions. Second operand 7 states. [2020-10-13 06:28:51,595 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:53,033 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132