/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/Problem13_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:30:27,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:30:27,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:30:27,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:30:27,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:30:27,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:30:27,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:30:27,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:30:27,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:30:27,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:30:27,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:30:27,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:30:27,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:30:27,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:30:27,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:30:27,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:30:27,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:30:27,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:30:27,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:30:27,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:30:27,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:30:27,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:30:27,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:30:27,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:30:27,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:30:27,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:30:27,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:30:27,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:30:27,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:30:27,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:30:27,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:30:27,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:30:27,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:30:27,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:30:27,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:30:27,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:30:27,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:30:27,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:30:27,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:30:27,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:30:27,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:30:27,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:30:27,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:30:27,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:30:27,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:30:27,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:30:27,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:30:27,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:30:27,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:30:27,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:30:27,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:30:27,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:30:27,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:30:27,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:30:27,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:30:27,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:30:27,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:30:27,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:30:27,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:30:27,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:30:27,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:30:27,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:30:27,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:30:27,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:30:27,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:30:27,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:30:27,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:30:27,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:30:27,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:30:27,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:30:27,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:30:27,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:30:28,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:30:28,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:30:28,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:30:28,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:30:28,291 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:30:28,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-13 08:30:28,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae09250fe/27bb8b668b3d4248a60605fafa52aaf3/FLAG3cd2b7288 [2020-10-13 08:30:29,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:30:29,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-13 08:30:29,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae09250fe/27bb8b668b3d4248a60605fafa52aaf3/FLAG3cd2b7288 [2020-10-13 08:30:29,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae09250fe/27bb8b668b3d4248a60605fafa52aaf3 [2020-10-13 08:30:29,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:30:29,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:30:29,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:30:29,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:30:29,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:30:29,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:30:29" (1/1) ... [2020-10-13 08:30:29,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:29, skipping insertion in model container [2020-10-13 08:30:29,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:30:29" (1/1) ... [2020-10-13 08:30:29,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:30:30,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:30:31,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:30:31,608 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:30:32,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:30:32,384 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:30:32,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32 WrapperNode [2020-10-13 08:30:32,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:30:32,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:30:32,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:30:32,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:30:32,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... [2020-10-13 08:30:32,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:30:32,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:30:32,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:30:32,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:30:32,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:30:32,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:30:32,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:30:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:30:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:30:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:30:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:30:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:30:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:30:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:30:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:30:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:30:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:30:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:30:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:30:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:30:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:30:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:30:46,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:30:46,900 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:30:46,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:30:46 BoogieIcfgContainer [2020-10-13 08:30:46,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:30:46,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:30:46,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:30:46,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:30:46,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:30:29" (1/3) ... [2020-10-13 08:30:46,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cea9331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:30:46, skipping insertion in model container [2020-10-13 08:30:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:32" (2/3) ... [2020-10-13 08:30:46,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cea9331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:30:46, skipping insertion in model container [2020-10-13 08:30:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:30:46" (3/3) ... [2020-10-13 08:30:46,927 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label08.c [2020-10-13 08:30:46,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:30:46,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:30:46,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:30:47,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:30:47,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:30:47,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:30:47,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:30:47,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:30:47,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:30:47,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:30:47,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:30:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:30:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 08:30:47,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:47,062 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] [2020-10-13 08:30:47,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:47,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:47,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1724184079, now seen corresponding path program 1 times [2020-10-13 08:30:47,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:47,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886236988] [2020-10-13 08:30:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:47,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:47,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 08:30:47,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 08:30:47,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:30:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:30:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:30:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:30:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:30:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:30:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:30:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:30:48,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886236988] [2020-10-13 08:30:48,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:30:48,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:30:48,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108031896] [2020-10-13 08:30:48,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:30:48,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:48,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:30:48,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:30:48,158 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:31:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:05,434 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-13 08:31:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:05,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-13 08:31:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:05,482 INFO L225 Difference]: With dead ends: 3230 [2020-10-13 08:31:05,483 INFO L226 Difference]: Without dead ends: 2026 [2020-10-13 08:31:05,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:05,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-13 08:31:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-13 08:31:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-13 08:31:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-13 08:31:05,682 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 56 [2020-10-13 08:31:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:05,684 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-13 08:31:05,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:31:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-13 08:31:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:31:05,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:05,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:05,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:31:05,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1158943563, now seen corresponding path program 1 times [2020-10-13 08:31:05,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:05,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849479160] [2020-10-13 08:31:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:06,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:31:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:31:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2512 [2020-10-13 08:31:08,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:31:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:31:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:31:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:31:08,750 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2020-10-13 08:31:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:08,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:08,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:08,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:31:08,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:31:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:09,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:09,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:31:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:09,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 08:31:09,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:31:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:31:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:09,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849479160] [2020-10-13 08:31:09,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:09,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:31:09,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277098802] [2020-10-13 08:31:09,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:31:09,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:09,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:31:09,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:09,203 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 6 states. [2020-10-13 08:31:10,218 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-13 08:31:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:26,358 INFO L93 Difference]: Finished difference Result 4048 states and 6620 transitions. [2020-10-13 08:31:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:31:26,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-13 08:31:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:26,382 INFO L225 Difference]: With dead ends: 4048 [2020-10-13 08:31:26,382 INFO L226 Difference]: Without dead ends: 2013 [2020-10-13 08:31:26,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:31:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-13 08:31:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2009. [2020-10-13 08:31:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-13 08:31:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3289 transitions. [2020-10-13 08:31:26,467 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3289 transitions. Word has length 131 [2020-10-13 08:31:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:26,471 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3289 transitions. [2020-10-13 08:31:26,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:31:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3289 transitions. [2020-10-13 08:31:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:31:26,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:26,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:26,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:31:26,484 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:26,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:26,484 INFO L82 PathProgramCache]: Analyzing trace with hash -136793, now seen corresponding path program 1 times [2020-10-13 08:31:26,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:26,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685630252] [2020-10-13 08:31:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:26,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:31:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:31:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-13 08:31:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:31:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:31:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:27,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:31:27,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:28,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:28,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:31:28,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-13 08:31:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:31:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:31:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:28,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685630252] [2020-10-13 08:31:28,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:31:28,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:31:28,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681404159] [2020-10-13 08:31:28,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:31:28,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:31:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:28,314 INFO L87 Difference]: Start difference. First operand 2009 states and 3289 transitions. Second operand 5 states. [2020-10-13 08:31:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:52,797 INFO L93 Difference]: Finished difference Result 5799 states and 9634 transitions. [2020-10-13 08:31:52,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:52,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 08:31:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:52,822 INFO L225 Difference]: With dead ends: 5799 [2020-10-13 08:31:52,823 INFO L226 Difference]: Without dead ends: 3796 [2020-10-13 08:31:52,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2020-10-13 08:31:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3722. [2020-10-13 08:31:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-13 08:31:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5850 transitions. [2020-10-13 08:31:52,954 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5850 transitions. Word has length 138 [2020-10-13 08:31:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:52,956 INFO L479 AbstractCegarLoop]: Abstraction has 3722 states and 5850 transitions. [2020-10-13 08:31:52,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:31:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5850 transitions. [2020-10-13 08:31:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 08:31:52,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:52,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:52,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:31:52,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:52,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2085692201, now seen corresponding path program 1 times [2020-10-13 08:31:52,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:52,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236581902] [2020-10-13 08:31:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:53,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:54,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:31:54,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:31:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-13 08:31:54,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:31:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:31:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:31:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:54,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:31:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:54,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:31:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:31:54,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:31:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:54,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236581902] [2020-10-13 08:31:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:31:54,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826346384] [2020-10-13 08:31:54,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:31:54,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:54,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:31:54,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:54,521 INFO L87 Difference]: Start difference. First operand 3722 states and 5850 transitions. Second operand 5 states. [2020-10-13 08:32:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:13,722 INFO L93 Difference]: Finished difference Result 10748 states and 17179 transitions. [2020-10-13 08:32:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:13,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 08:32:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:13,777 INFO L225 Difference]: With dead ends: 10748 [2020-10-13 08:32:13,777 INFO L226 Difference]: Without dead ends: 7032 [2020-10-13 08:32:13,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7032 states. [2020-10-13 08:32:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7032 to 7004. [2020-10-13 08:32:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7004 states. [2020-10-13 08:32:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 9768 transitions. [2020-10-13 08:32:14,010 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 9768 transitions. Word has length 157 [2020-10-13 08:32:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:14,012 INFO L479 AbstractCegarLoop]: Abstraction has 7004 states and 9768 transitions. [2020-10-13 08:32:14,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 9768 transitions. [2020-10-13 08:32:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 08:32:14,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:14,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:14,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:32:14,022 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1552165644, now seen corresponding path program 1 times [2020-10-13 08:32:14,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:14,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307360100] [2020-10-13 08:32:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:15,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:15,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 08:32:15,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:32:15,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-13 08:32:15,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 08:32:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:32:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:16,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:16,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:16,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:32:16,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:16,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:16,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:16,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:16,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:32:16,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:32:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:32:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:16,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307360100] [2020-10-13 08:32:16,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:16,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:16,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704139913] [2020-10-13 08:32:16,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:16,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:16,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:16,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:16,339 INFO L87 Difference]: Start difference. First operand 7004 states and 9768 transitions. Second operand 5 states. [2020-10-13 08:32:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:38,336 INFO L93 Difference]: Finished difference Result 17295 states and 25153 transitions. [2020-10-13 08:32:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:38,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 08:32:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:38,389 INFO L225 Difference]: With dead ends: 17295 [2020-10-13 08:32:38,389 INFO L226 Difference]: Without dead ends: 10297 [2020-10-13 08:32:38,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10297 states. [2020-10-13 08:32:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10297 to 10271. [2020-10-13 08:32:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10271 states. [2020-10-13 08:32:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 13692 transitions. [2020-10-13 08:32:38,670 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 13692 transitions. Word has length 174 [2020-10-13 08:32:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:38,670 INFO L479 AbstractCegarLoop]: Abstraction has 10271 states and 13692 transitions. [2020-10-13 08:32:38,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 13692 transitions. [2020-10-13 08:32:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-13 08:32:38,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:38,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:32:38,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:32:38,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 800027606, now seen corresponding path program 1 times [2020-10-13 08:32:38,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:38,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31037436] [2020-10-13 08:32:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:43,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:43,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 08:32:43,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:32:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 08:32:43,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-13 08:32:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:32:43,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:43,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:43,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:43,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:43,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:32:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:43,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:43,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:32:43,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:32:43,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:43,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:32:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:44,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:32:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:32:44,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:32:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:32:44,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31037436] [2020-10-13 08:32:44,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:44,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:44,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363725923] [2020-10-13 08:32:44,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:44,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:44,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:44,262 INFO L87 Difference]: Start difference. First operand 10271 states and 13692 transitions. Second operand 5 states. [2020-10-13 08:33:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:03,829 INFO L93 Difference]: Finished difference Result 25424 states and 34758 transitions. [2020-10-13 08:33:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:03,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-13 08:33:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:03,898 INFO L225 Difference]: With dead ends: 25424 [2020-10-13 08:33:03,898 INFO L226 Difference]: Without dead ends: 15159 [2020-10-13 08:33:03,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15159 states. [2020-10-13 08:33:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15159 to 15147. [2020-10-13 08:33:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15147 states. [2020-10-13 08:33:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 19934 transitions. [2020-10-13 08:33:04,265 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 19934 transitions. Word has length 245 [2020-10-13 08:33:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:04,266 INFO L479 AbstractCegarLoop]: Abstraction has 15147 states and 19934 transitions. [2020-10-13 08:33:04,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 19934 transitions. [2020-10-13 08:33:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 08:33:04,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:04,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:33:04,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:33:04,284 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash -315335189, now seen corresponding path program 1 times [2020-10-13 08:33:04,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:04,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728768969] [2020-10-13 08:33:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 08:33:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:33:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 08:33:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 204 [2020-10-13 08:33:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:33:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:09,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:09,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:33:09,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:09,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:09,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:09,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:09,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:33:09,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:33:09,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:09,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:33:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:09,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:09,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:33:09,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 08:33:09,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:09,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:09,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:09,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:33:09,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:33:10,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728768969] [2020-10-13 08:33:10,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:10,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:10,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46122100] [2020-10-13 08:33:10,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:10,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:10,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:10,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:10,054 INFO L87 Difference]: Start difference. First operand 15147 states and 19934 transitions. Second operand 5 states. [2020-10-13 08:33:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:28,297 INFO L93 Difference]: Finished difference Result 30315 states and 39923 transitions. [2020-10-13 08:33:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:28,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-13 08:33:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:28,360 INFO L225 Difference]: With dead ends: 30315 [2020-10-13 08:33:28,360 INFO L226 Difference]: Without dead ends: 15151 [2020-10-13 08:33:28,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15151 states. [2020-10-13 08:33:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 15147. [2020-10-13 08:33:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15147 states. [2020-10-13 08:33:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 19931 transitions. [2020-10-13 08:33:28,753 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 19931 transitions. Word has length 248 [2020-10-13 08:33:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:28,754 INFO L479 AbstractCegarLoop]: Abstraction has 15147 states and 19931 transitions. [2020-10-13 08:33:28,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 19931 transitions. [2020-10-13 08:33:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-13 08:33:28,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:28,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:28,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:33:28,764 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:28,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1766857056, now seen corresponding path program 1 times [2020-10-13 08:33:28,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:28,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103086773] [2020-10-13 08:33:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:30,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 08:33:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:33:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-13 08:33:30,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-13 08:33:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 08:33:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:30,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:30,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:30,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:30,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:30,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:30,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 08:33:30,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 08:33:30,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-13 08:33:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:30,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103086773] [2020-10-13 08:33:30,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:30,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:30,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825240952] [2020-10-13 08:33:30,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:30,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:30,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:30,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:30,782 INFO L87 Difference]: Start difference. First operand 15147 states and 19931 transitions. Second operand 5 states. [2020-10-13 08:33:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:52,180 INFO L93 Difference]: Finished difference Result 35190 states and 48312 transitions. [2020-10-13 08:33:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:52,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-13 08:33:52,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:52,241 INFO L225 Difference]: With dead ends: 35190 [2020-10-13 08:33:52,242 INFO L226 Difference]: Without dead ends: 20049 [2020-10-13 08:33:52,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20049 states. [2020-10-13 08:33:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20049 to 20032. [2020-10-13 08:33:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20032 states. [2020-10-13 08:33:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20032 states to 20032 states and 26117 transitions. [2020-10-13 08:33:52,678 INFO L78 Accepts]: Start accepts. Automaton has 20032 states and 26117 transitions. Word has length 247 [2020-10-13 08:33:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:52,679 INFO L479 AbstractCegarLoop]: Abstraction has 20032 states and 26117 transitions. [2020-10-13 08:33:52,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 20032 states and 26117 transitions. [2020-10-13 08:33:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 08:33:52,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:52,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:33:52,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:33:52,692 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash -531722437, now seen corresponding path program 1 times [2020-10-13 08:33:52,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:52,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105457347] [2020-10-13 08:33:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:53,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 08:33:53,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:33:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-13 08:33:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:33:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:33:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:54,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:54,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:54,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:33:54,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 08:33:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:33:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:54,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:54,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:33:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:33:54,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:33:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:33:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 08:33:54,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105457347] [2020-10-13 08:33:54,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:33:54,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:33:54,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394617384] [2020-10-13 08:33:54,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:54,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:54,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:54,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:54,430 INFO L87 Difference]: Start difference. First operand 20032 states and 26117 transitions. Second operand 5 states. [2020-10-13 08:34:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:10,645 INFO L93 Difference]: Finished difference Result 40048 states and 52335 transitions. [2020-10-13 08:34:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:10,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-13 08:34:10,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:10,698 INFO L225 Difference]: With dead ends: 40048 [2020-10-13 08:34:10,698 INFO L226 Difference]: Without dead ends: 20022 [2020-10-13 08:34:10,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20022 states. [2020-10-13 08:34:11,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20022 to 20016. [2020-10-13 08:34:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20016 states. [2020-10-13 08:34:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20016 states to 20016 states and 26085 transitions. [2020-10-13 08:34:12,320 INFO L78 Accepts]: Start accepts. Automaton has 20016 states and 26085 transitions. Word has length 275 [2020-10-13 08:34:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:12,321 INFO L479 AbstractCegarLoop]: Abstraction has 20016 states and 26085 transitions. [2020-10-13 08:34:12,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 20016 states and 26085 transitions. [2020-10-13 08:34:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 08:34:12,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:12,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:34:12,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:34:12,333 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash -238046030, now seen corresponding path program 1 times [2020-10-13 08:34:12,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:12,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337663531] [2020-10-13 08:34:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:17,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:17,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 08:34:17,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:34:17,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 08:34:17,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:17,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 08:34:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:34:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0