/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:17:57,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:17:57,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:17:57,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:17:57,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:17:57,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:17:57,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:17:57,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:17:57,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:17:57,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:17:57,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:17:57,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:17:57,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:17:57,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:17:57,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:17:57,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:17:57,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:17:57,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:17:57,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:17:57,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:17:57,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:17:57,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:17:57,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:17:57,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:17:57,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:17:57,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:17:57,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:17:57,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:17:57,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:17:57,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:17:57,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:17:57,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:17:57,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:17:57,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:17:57,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:17:57,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:17:57,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:17:57,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:17:57,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:17:57,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:17:57,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:17:57,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:17:57,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:17:57,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:17:57,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:17:57,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:17:57,866 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:17:57,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:17:57,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:17:57,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:17:57,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:17:57,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:17:57,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:17:57,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:17:57,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:17:57,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:17:57,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:17:57,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:17:57,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:17:57,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:17:57,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:17:57,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:17:57,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:17:57,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:17:57,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:17:57,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:17:57,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:17:57,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:17:57,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:17:57,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:17:57,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:17:57,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:17:58,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:17:58,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:17:58,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:17:58,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:17:58,176 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:17:58,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-13 06:17:58,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e41958d7/0812f1941a754518a0b1a217769a9aed/FLAGf18fecead [2020-10-13 06:17:58,832 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:17:58,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-13 06:17:58,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e41958d7/0812f1941a754518a0b1a217769a9aed/FLAGf18fecead [2020-10-13 06:17:58,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e41958d7/0812f1941a754518a0b1a217769a9aed [2020-10-13 06:17:59,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:17:59,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:17:59,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:17:59,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:17:59,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:17:59,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:17:58" (1/1) ... [2020-10-13 06:17:59,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3cba46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:59, skipping insertion in model container [2020-10-13 06:17:59,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:17:58" (1/1) ... [2020-10-13 06:17:59,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:17:59,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:17:59,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:17:59,957 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:18:00,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:00,284 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:18:00,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00 WrapperNode [2020-10-13 06:18:00,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:00,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:18:00,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:18:00,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:18:00,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... [2020-10-13 06:18:00,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:18:00,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:18:00,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:18:00,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:18:00,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:18:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:18:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:18:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:18:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:18:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:18:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:18:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:18:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:18:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:18:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:18:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:18:02,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:18:02,563 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:18:02,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:02 BoogieIcfgContainer [2020-10-13 06:18:02,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:18:02,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:18:02,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:18:02,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:18:02,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:17:58" (1/3) ... [2020-10-13 06:18:02,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac1cf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:02, skipping insertion in model container [2020-10-13 06:18:02,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:00" (2/3) ... [2020-10-13 06:18:02,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac1cf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:02, skipping insertion in model container [2020-10-13 06:18:02,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:02" (3/3) ... [2020-10-13 06:18:02,586 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label17.c [2020-10-13 06:18:02,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:18:02,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:18:02,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:18:02,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:18:02,658 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:18:02,658 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:18:02,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:18:02,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:18:02,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:18:02,659 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:18:02,659 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:18:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:18:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 06:18:02,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:02,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:02,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:02,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1924076088, now seen corresponding path program 1 times [2020-10-13 06:18:02,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:02,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810860721] [2020-10-13 06:18:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:03,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 06:18:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:18:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3666 [2020-10-13 06:18:06,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:18:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:18:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:18:07,803 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-13 06:18:07,996 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-13 06:18:08,194 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-13 06:18:08,425 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-13 06:18:08,712 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:08,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:08,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:08,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:18:08,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:09,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810860721] [2020-10-13 06:18:09,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:18:09,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:18:09,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677610492] [2020-10-13 06:18:09,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:18:09,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:18:09,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:09,455 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:18:09,812 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:18:10,465 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-13 06:18:11,033 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-13 06:18:11,662 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2020-10-13 06:18:12,704 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 173 [2020-10-13 06:18:13,883 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 172 [2020-10-13 06:18:15,213 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 171 [2020-10-13 06:18:18,193 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 170 [2020-10-13 06:18:19,303 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-13 06:18:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:21,865 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:18:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:18:21,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 205 [2020-10-13 06:18:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:21,883 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:18:21,883 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:18:21,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:18:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:18:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:18:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:18:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:18:21,969 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 205 [2020-10-13 06:18:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:21,970 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:18:21,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:18:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:18:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 06:18:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:21,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:21,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:18:21,978 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:21,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1262310047, now seen corresponding path program 1 times [2020-10-13 06:18:21,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:21,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763923551] [2020-10-13 06:18:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 06:18:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:18:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:18:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:18:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:28,140 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-13 06:18:28,353 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-10-13 06:18:28,530 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-13 06:18:28,695 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-13 06:18:28,838 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-13 06:18:28,970 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:29,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:29,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:29,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:18:29,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:29,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:29,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 06:18:29,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:18:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:18:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:29,462 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2020-10-13 06:18:29,722 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 102 [2020-10-13 06:18:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:30,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763923551] [2020-10-13 06:18:30,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:30,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:18:30,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683258071] [2020-10-13 06:18:30,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:18:30,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:30,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:18:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:18:30,285 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:18:30,538 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 06:18:30,855 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 58 [2020-10-13 06:18:31,059 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 48 [2020-10-13 06:18:31,280 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 61 [2020-10-13 06:18:31,840 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 165 [2020-10-13 06:18:32,481 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 173 [2020-10-13 06:18:33,309 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 172 [2020-10-13 06:18:33,752 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-10-13 06:18:34,973 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 171 [2020-10-13 06:18:36,978 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 170 [2020-10-13 06:18:39,596 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 169 [2020-10-13 06:18:40,435 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 167 [2020-10-13 06:18:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:42,102 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-13 06:18:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:18:42,106 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 216 [2020-10-13 06:18:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:42,114 INFO L225 Difference]: With dead ends: 756 [2020-10-13 06:18:42,114 INFO L226 Difference]: Without dead ends: 513 [2020-10-13 06:18:42,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:18:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-13 06:18:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-13 06:18:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-13 06:18:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-13 06:18:42,157 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 216 [2020-10-13 06:18:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:42,158 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-13 06:18:42,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:18:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-13 06:18:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-13 06:18:42,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:42,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:42,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:18:42,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:42,167 INFO L82 PathProgramCache]: Analyzing trace with hash -42498605, now seen corresponding path program 1 times [2020-10-13 06:18:42,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:42,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528212376] [2020-10-13 06:18:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:43,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 06:18:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2572 [2020-10-13 06:18:44,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:18:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:18:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:45,194 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:45,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:45,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:45,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:45,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:18:45,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:18:45,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:18:45,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:18:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:45,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528212376] [2020-10-13 06:18:45,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:45,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:18:45,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718852559] [2020-10-13 06:18:46,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:18:46,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:46,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:18:46,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:18:46,001 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 5 states. [2020-10-13 06:18:46,433 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:18:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:48,636 INFO L93 Difference]: Finished difference Result 932 states and 1397 transitions. [2020-10-13 06:18:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:18:48,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-13 06:18:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:48,642 INFO L225 Difference]: With dead ends: 932 [2020-10-13 06:18:48,643 INFO L226 Difference]: Without dead ends: 499 [2020-10-13 06:18:48,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:18:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-13 06:18:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2020-10-13 06:18:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-13 06:18:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 634 transitions. [2020-10-13 06:18:48,706 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 634 transitions. Word has length 226 [2020-10-13 06:18:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:48,706 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 634 transitions. [2020-10-13 06:18:48,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:18:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 634 transitions. [2020-10-13 06:18:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-13 06:18:48,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:48,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:48,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:18:48,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:48,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1081899493, now seen corresponding path program 1 times [2020-10-13 06:18:48,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:48,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655619041] [2020-10-13 06:18:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:52,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:52,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-13 06:18:52,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4147 [2020-10-13 06:18:52,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:18:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:18:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:53,125 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:53,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:53,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:53,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:18:53,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:53,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:18:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 06:18:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:18:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:53,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655619041] [2020-10-13 06:18:53,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:18:53,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:18:53,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832058390] [2020-10-13 06:18:53,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:53,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:53,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:53,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:53,583 INFO L87 Difference]: Start difference. First operand 497 states and 634 transitions. Second operand 7 states. [2020-10-13 06:18:53,717 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:18:55,425 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:18:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:56,408 INFO L93 Difference]: Finished difference Result 996 states and 1398 transitions. [2020-10-13 06:18:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:18:56,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-13 06:18:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:56,414 INFO L225 Difference]: With dead ends: 996 [2020-10-13 06:18:56,414 INFO L226 Difference]: Without dead ends: 753 [2020-10-13 06:18:56,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:18:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-10-13 06:18:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 745. [2020-10-13 06:18:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-10-13 06:18:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 998 transitions. [2020-10-13 06:18:56,456 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 998 transitions. Word has length 237 [2020-10-13 06:18:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:56,456 INFO L479 AbstractCegarLoop]: Abstraction has 745 states and 998 transitions. [2020-10-13 06:18:56,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 998 transitions. [2020-10-13 06:18:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 06:18:56,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:56,462 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:56,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:18:56,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:56,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:56,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1893624450, now seen corresponding path program 1 times [2020-10-13 06:18:56,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:56,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557743947] [2020-10-13 06:18:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 06:19:01,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 06:19:01,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:19:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:19:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:19:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:01,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:01,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:01,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:19:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:01,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:01,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:01,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:19:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:19:01,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:19:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:19:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:19:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:19:02,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557743947] [2020-10-13 06:19:02,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:02,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:19:02,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142828721] [2020-10-13 06:19:02,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:02,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:02,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:02,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:02,067 INFO L87 Difference]: Start difference. First operand 745 states and 998 transitions. Second operand 7 states. [2020-10-13 06:19:02,212 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:02,526 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:05,059 INFO L93 Difference]: Finished difference Result 1704 states and 2470 transitions. [2020-10-13 06:19:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:05,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-13 06:19:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:05,067 INFO L225 Difference]: With dead ends: 1704 [2020-10-13 06:19:05,067 INFO L226 Difference]: Without dead ends: 1213 [2020-10-13 06:19:05,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-13 06:19:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1175. [2020-10-13 06:19:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-10-13 06:19:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1483 transitions. [2020-10-13 06:19:05,114 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1483 transitions. Word has length 248 [2020-10-13 06:19:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:05,114 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1483 transitions. [2020-10-13 06:19:05,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1483 transitions. [2020-10-13 06:19:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 06:19:05,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:05,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:05,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:19:05,119 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:05,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1612956664, now seen corresponding path program 1 times [2020-10-13 06:19:05,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:05,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509970577] [2020-10-13 06:19:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:05,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:07,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 06:19:07,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:19:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2203 [2020-10-13 06:19:07,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:19:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:07,523 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:19:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:07,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:07,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:07,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:07,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:07,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:19:07,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:19:07,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:19:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:07,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509970577] [2020-10-13 06:19:07,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:07,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:07,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572453728] [2020-10-13 06:19:07,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:07,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:07,753 INFO L87 Difference]: Start difference. First operand 1175 states and 1483 transitions. Second operand 7 states. [2020-10-13 06:19:07,971 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:08,278 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:11,863 INFO L93 Difference]: Finished difference Result 3939 states and 5377 transitions. [2020-10-13 06:19:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:11,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-13 06:19:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:11,882 INFO L225 Difference]: With dead ends: 3939 [2020-10-13 06:19:11,882 INFO L226 Difference]: Without dead ends: 3018 [2020-10-13 06:19:11,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-10-13 06:19:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2954. [2020-10-13 06:19:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2954 states. [2020-10-13 06:19:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 3707 transitions. [2020-10-13 06:19:11,982 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 3707 transitions. Word has length 251 [2020-10-13 06:19:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:11,983 INFO L479 AbstractCegarLoop]: Abstraction has 2954 states and 3707 transitions. [2020-10-13 06:19:11,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 3707 transitions. [2020-10-13 06:19:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 06:19:11,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:11,991 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:11,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:19:11,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:11,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2066504908, now seen corresponding path program 1 times [2020-10-13 06:19:11,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:11,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021230730] [2020-10-13 06:19:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:15,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:15,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 06:19:15,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:19:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3839 [2020-10-13 06:19:15,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:19:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:16,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:16,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:16,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:16,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:19:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:16,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021230730] [2020-10-13 06:19:16,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:16,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:16,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751852666] [2020-10-13 06:19:16,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:16,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:16,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:16,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:16,318 INFO L87 Difference]: Start difference. First operand 2954 states and 3707 transitions. Second operand 7 states. [2020-10-13 06:19:16,460 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:17,708 INFO L93 Difference]: Finished difference Result 5600 states and 7120 transitions. [2020-10-13 06:19:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:17,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-13 06:19:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:17,725 INFO L225 Difference]: With dead ends: 5600 [2020-10-13 06:19:17,726 INFO L226 Difference]: Without dead ends: 2900 [2020-10-13 06:19:17,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:19:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-10-13 06:19:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2896. [2020-10-13 06:19:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2896 states. [2020-10-13 06:19:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3548 transitions. [2020-10-13 06:19:17,808 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3548 transitions. Word has length 257 [2020-10-13 06:19:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:17,808 INFO L479 AbstractCegarLoop]: Abstraction has 2896 states and 3548 transitions. [2020-10-13 06:19:17,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3548 transitions. [2020-10-13 06:19:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 06:19:17,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:17,816 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:17,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:19:17,816 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:17,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1052032481, now seen corresponding path program 1 times [2020-10-13 06:19:17,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:17,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076127239] [2020-10-13 06:19:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:21,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:22,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 06:19:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 06:19:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 06:19:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 06:19:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:23,047 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:23,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:23,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:19:23,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:23,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:23,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:19:23,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:23,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:19:23,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:19:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 06:19:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:19:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:23,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:19:23,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:19:23,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 06:19:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:19:23,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076127239] [2020-10-13 06:19:23,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:23,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:23,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565611493] [2020-10-13 06:19:23,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:23,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:23,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:23,249 INFO L87 Difference]: Start difference. First operand 2896 states and 3548 transitions. Second operand 5 states. [2020-10-13 06:19:23,378 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:24,517 INFO L93 Difference]: Finished difference Result 4686 states and 5783 transitions. [2020-10-13 06:19:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:24,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-13 06:19:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:24,533 INFO L225 Difference]: With dead ends: 4686 [2020-10-13 06:19:24,534 INFO L226 Difference]: Without dead ends: 2898 [2020-10-13 06:19:24,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:19:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-10-13 06:19:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2894. [2020-10-13 06:19:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2894 states. [2020-10-13 06:19:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3544 transitions. [2020-10-13 06:19:24,602 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3544 transitions. Word has length 261 [2020-10-13 06:19:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:24,603 INFO L479 AbstractCegarLoop]: Abstraction has 2894 states and 3544 transitions. [2020-10-13 06:19:24,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3544 transitions. [2020-10-13 06:19:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 06:19:24,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:24,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:24,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:19:24,611 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1040313680, now seen corresponding path program 1 times [2020-10-13 06:19:24,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:24,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532914365] [2020-10-13 06:19:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:29,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:19:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:29,845 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:29,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:29,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:29,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:29,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:29,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:19:29,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:19:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:19:29,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 06:19:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 06:19:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:19:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 06:19:30,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532914365] [2020-10-13 06:19:30,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:30,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:30,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468654026] [2020-10-13 06:19:30,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:30,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:30,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:30,140 INFO L87 Difference]: Start difference. First operand 2894 states and 3544 transitions. Second operand 7 states. [2020-10-13 06:19:30,366 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:30,695 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:33,686 INFO L93 Difference]: Finished difference Result 7880 states and 9976 transitions. [2020-10-13 06:19:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:33,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-13 06:19:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:33,709 INFO L225 Difference]: With dead ends: 7880 [2020-10-13 06:19:33,709 INFO L226 Difference]: Without dead ends: 5240 [2020-10-13 06:19:33,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5240 states. [2020-10-13 06:19:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5240 to 5194. [2020-10-13 06:19:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5194 states. [2020-10-13 06:19:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 6481 transitions. [2020-10-13 06:19:33,833 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 6481 transitions. Word has length 265 [2020-10-13 06:19:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:33,833 INFO L479 AbstractCegarLoop]: Abstraction has 5194 states and 6481 transitions. [2020-10-13 06:19:33,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 6481 transitions. [2020-10-13 06:19:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-13 06:19:33,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:33,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:33,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:19:33,849 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:33,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1224470664, now seen corresponding path program 1 times [2020-10-13 06:19:33,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:33,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335636633] [2020-10-13 06:19:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:34,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:38,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 06:19:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:19:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 06:19:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:19:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:39,089 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:39,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:39,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:19:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:19:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:39,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 06:19:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:39,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 06:19:39,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:19:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:19:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 06:19:39,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335636633] [2020-10-13 06:19:39,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:39,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:39,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811042780] [2020-10-13 06:19:39,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:39,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:39,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:39,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:39,496 INFO L87 Difference]: Start difference. First operand 5194 states and 6481 transitions. Second operand 7 states. [2020-10-13 06:19:39,862 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:19:40,958 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:19:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:42,474 INFO L93 Difference]: Finished difference Result 13657 states and 18399 transitions. [2020-10-13 06:19:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:19:42,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-13 06:19:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:42,522 INFO L225 Difference]: With dead ends: 13657 [2020-10-13 06:19:42,522 INFO L226 Difference]: Without dead ends: 8926 [2020-10-13 06:19:42,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:19:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8926 states. [2020-10-13 06:19:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8926 to 8785. [2020-10-13 06:19:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8785 states. [2020-10-13 06:19:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8785 states to 8785 states and 11080 transitions. [2020-10-13 06:19:42,776 INFO L78 Accepts]: Start accepts. Automaton has 8785 states and 11080 transitions. Word has length 277 [2020-10-13 06:19:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:42,776 INFO L479 AbstractCegarLoop]: Abstraction has 8785 states and 11080 transitions. [2020-10-13 06:19:42,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8785 states and 11080 transitions. [2020-10-13 06:19:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 06:19:42,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:42,799 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:42,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:19:42,800 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2007103516, now seen corresponding path program 1 times [2020-10-13 06:19:42,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:42,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193556771] [2020-10-13 06:19:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:47,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:19:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,032 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:19:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:19:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:19:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:19:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:19:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 06:19:48,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:19:48,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:19:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:48,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 82 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 06:19:48,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193556771] [2020-10-13 06:19:48,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:48,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:48,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265930677] [2020-10-13 06:19:48,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:48,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:48,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:48,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:48,355 INFO L87 Difference]: Start difference. First operand 8785 states and 11080 transitions. Second operand 7 states. [2020-10-13 06:19:48,572 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:48,901 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:51,194 INFO L93 Difference]: Finished difference Result 19011 states and 24488 transitions. [2020-10-13 06:19:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:51,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-13 06:19:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:51,252 INFO L225 Difference]: With dead ends: 19011 [2020-10-13 06:19:51,252 INFO L226 Difference]: Without dead ends: 11179 [2020-10-13 06:19:51,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11179 states. [2020-10-13 06:19:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11179 to 11045. [2020-10-13 06:19:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11045 states. [2020-10-13 06:19:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11045 states to 11045 states and 13945 transitions. [2020-10-13 06:19:51,544 INFO L78 Accepts]: Start accepts. Automaton has 11045 states and 13945 transitions. Word has length 279 [2020-10-13 06:19:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:51,545 INFO L479 AbstractCegarLoop]: Abstraction has 11045 states and 13945 transitions. [2020-10-13 06:19:51,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 11045 states and 13945 transitions. [2020-10-13 06:19:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 06:19:51,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:51,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:51,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:19:51,573 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:51,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1123825019, now seen corresponding path program 1 times [2020-10-13 06:19:51,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:51,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120610681] [2020-10-13 06:19:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3143 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 06:19:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:54,936 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:54,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:55,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:19:55,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 06:19:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:55,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120610681] [2020-10-13 06:19:55,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:55,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:55,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253827514] [2020-10-13 06:19:55,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:55,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:55,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:55,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:55,296 INFO L87 Difference]: Start difference. First operand 11045 states and 13945 transitions. Second operand 7 states. [2020-10-13 06:19:55,446 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:57,813 INFO L93 Difference]: Finished difference Result 25618 states and 34220 transitions. [2020-10-13 06:19:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:19:57,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-13 06:19:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:57,886 INFO L225 Difference]: With dead ends: 25618 [2020-10-13 06:19:57,887 INFO L226 Difference]: Without dead ends: 17529 [2020-10-13 06:19:57,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:19:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17529 states. [2020-10-13 06:19:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17529 to 17275. [2020-10-13 06:19:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17275 states. [2020-10-13 06:19:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17275 states to 17275 states and 22323 transitions. [2020-10-13 06:19:58,317 INFO L78 Accepts]: Start accepts. Automaton has 17275 states and 22323 transitions. Word has length 289 [2020-10-13 06:19:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:58,317 INFO L479 AbstractCegarLoop]: Abstraction has 17275 states and 22323 transitions. [2020-10-13 06:19:58,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 17275 states and 22323 transitions. [2020-10-13 06:19:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 06:19:58,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:58,355 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:58,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:19:58,355 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:58,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:58,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1645047539, now seen corresponding path program 1 times [2020-10-13 06:19:58,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:58,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280264578] [2020-10-13 06:19:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:03,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 06:20:03,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:20:03,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 06:20:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 06:20:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:03,641 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:03,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:03,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:03,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:03,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:03,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:03,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:03,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:20:03,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:03,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:20:03,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:20:03,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:03,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:20:03,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 06:20:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:03,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 06:20:03,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:20:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:20:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:20:03,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280264578] [2020-10-13 06:20:03,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:03,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:03,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240862959] [2020-10-13 06:20:03,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:03,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:03,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:03,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:03,951 INFO L87 Difference]: Start difference. First operand 17275 states and 22323 transitions. Second operand 7 states. [2020-10-13 06:20:04,302 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:04,993 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:06,840 INFO L93 Difference]: Finished difference Result 42212 states and 57252 transitions. [2020-10-13 06:20:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:06,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-13 06:20:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:06,938 INFO L225 Difference]: With dead ends: 42212 [2020-10-13 06:20:06,938 INFO L226 Difference]: Without dead ends: 25900 [2020-10-13 06:20:06,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25900 states. [2020-10-13 06:20:07,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25900 to 25656. [2020-10-13 06:20:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25656 states. [2020-10-13 06:20:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25656 states to 25656 states and 31253 transitions. [2020-10-13 06:20:07,598 INFO L78 Accepts]: Start accepts. Automaton has 25656 states and 31253 transitions. Word has length 300 [2020-10-13 06:20:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:07,598 INFO L479 AbstractCegarLoop]: Abstraction has 25656 states and 31253 transitions. [2020-10-13 06:20:07,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25656 states and 31253 transitions. [2020-10-13 06:20:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-13 06:20:07,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:07,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:07,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:20:07,644 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:07,645 INFO L82 PathProgramCache]: Analyzing trace with hash 360709333, now seen corresponding path program 1 times [2020-10-13 06:20:07,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:07,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845228429] [2020-10-13 06:20:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:12,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:12,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-13 06:20:12,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:20:12,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 06:20:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:20:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:12,891 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:12,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:13,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:13,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:13,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:20:13,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:20:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:13,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:20:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:13,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:20:13,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 06:20:13,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:20:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:20:13,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845228429] [2020-10-13 06:20:13,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:13,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:13,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197894489] [2020-10-13 06:20:13,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:13,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:13,659 INFO L87 Difference]: Start difference. First operand 25656 states and 31253 transitions. Second operand 7 states. [2020-10-13 06:20:13,801 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:14,628 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:20:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:16,428 INFO L93 Difference]: Finished difference Result 54195 states and 67047 transitions. [2020-10-13 06:20:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:20:16,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-13 06:20:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:16,539 INFO L225 Difference]: With dead ends: 54195 [2020-10-13 06:20:16,539 INFO L226 Difference]: Without dead ends: 32345 [2020-10-13 06:20:16,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:20:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32345 states. [2020-10-13 06:20:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32345 to 32231. [2020-10-13 06:20:17,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32231 states. [2020-10-13 06:20:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32231 states to 32231 states and 38431 transitions. [2020-10-13 06:20:17,191 INFO L78 Accepts]: Start accepts. Automaton has 32231 states and 38431 transitions. Word has length 343 [2020-10-13 06:20:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:17,192 INFO L479 AbstractCegarLoop]: Abstraction has 32231 states and 38431 transitions. [2020-10-13 06:20:17,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 32231 states and 38431 transitions. [2020-10-13 06:20:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-13 06:20:17,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:17,228 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:20:17,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:20:17,229 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash 342970440, now seen corresponding path program 1 times [2020-10-13 06:20:17,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:17,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707017810] [2020-10-13 06:20:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:22,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:20:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:22,537 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:22,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:20:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 06:20:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:20:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:22,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 06:20:22,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:20:22,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:20:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:23,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707017810] [2020-10-13 06:20:23,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:23,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:23,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962311257] [2020-10-13 06:20:23,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:23,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:23,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:23,004 INFO L87 Difference]: Start difference. First operand 32231 states and 38431 transitions. Second operand 7 states. [2020-10-13 06:20:23,135 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:23,888 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:25,949 INFO L93 Difference]: Finished difference Result 80844 states and 98823 transitions. [2020-10-13 06:20:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:25,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-13 06:20:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:26,106 INFO L225 Difference]: With dead ends: 80844 [2020-10-13 06:20:26,107 INFO L226 Difference]: Without dead ends: 49777 [2020-10-13 06:20:26,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49777 states. [2020-10-13 06:20:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49777 to 49385. [2020-10-13 06:20:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49385 states. [2020-10-13 06:20:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49385 states to 49385 states and 58763 transitions. [2020-10-13 06:20:27,185 INFO L78 Accepts]: Start accepts. Automaton has 49385 states and 58763 transitions. Word has length 354 [2020-10-13 06:20:27,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:27,186 INFO L479 AbstractCegarLoop]: Abstraction has 49385 states and 58763 transitions. [2020-10-13 06:20:27,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:27,187 INFO L276 IsEmpty]: Start isEmpty. Operand 49385 states and 58763 transitions. [2020-10-13 06:20:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-13 06:20:27,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:27,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:20:27,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:20:27,243 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash -902148677, now seen corresponding path program 1 times [2020-10-13 06:20:27,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:27,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596892813] [2020-10-13 06:20:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-13 06:20:32,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:20:32,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:20:32,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:32,523 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:20:32,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:20:32,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:20:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:20:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 06:20:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 06:20:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 06:20:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:20:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:20:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 151 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 06:20:32,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596892813] [2020-10-13 06:20:32,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:32,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:32,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130066728] [2020-10-13 06:20:32,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:32,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:32,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:32,951 INFO L87 Difference]: Start difference. First operand 49385 states and 58763 transitions. Second operand 7 states. [2020-10-13 06:20:33,096 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:34,058 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:36,041 INFO L93 Difference]: Finished difference Result 97128 states and 116418 transitions. [2020-10-13 06:20:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:36,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-13 06:20:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:36,182 INFO L225 Difference]: With dead ends: 97128 [2020-10-13 06:20:36,182 INFO L226 Difference]: Without dead ends: 52791 [2020-10-13 06:20:36,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52791 states. [2020-10-13 06:20:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52791 to 52641. [2020-10-13 06:20:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52641 states. [2020-10-13 06:20:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52641 states to 52641 states and 61825 transitions. [2020-10-13 06:20:39,058 INFO L78 Accepts]: Start accepts. Automaton has 52641 states and 61825 transitions. Word has length 357 [2020-10-13 06:20:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:39,059 INFO L479 AbstractCegarLoop]: Abstraction has 52641 states and 61825 transitions. [2020-10-13 06:20:39,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 52641 states and 61825 transitions. [2020-10-13 06:20:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-13 06:20:39,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:39,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:20:39,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:20:39,101 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1810661243, now seen corresponding path program 1 times [2020-10-13 06:20:39,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:39,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713303118] [2020-10-13 06:20:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-13 06:20:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:44,521 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:44,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:44,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:44,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:20:44,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:44,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:20:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:44,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:44,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:20:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 06:20:44,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:20:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:20:44,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713303118] [2020-10-13 06:20:44,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:44,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:20:44,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732384996] [2020-10-13 06:20:44,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:20:44,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:20:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:20:44,958 INFO L87 Difference]: Start difference. First operand 52641 states and 61825 transitions. Second operand 6 states. [2020-10-13 06:20:45,095 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:45,803 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:48,287 INFO L93 Difference]: Finished difference Result 106061 states and 125779 transitions. [2020-10-13 06:20:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:20:48,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 360 [2020-10-13 06:20:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:48,818 INFO L225 Difference]: With dead ends: 106061 [2020-10-13 06:20:48,818 INFO L226 Difference]: Without dead ends: 58497 [2020-10-13 06:20:48,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:20:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58497 states. [2020-10-13 06:20:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58497 to 58441. [2020-10-13 06:20:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58441 states. [2020-10-13 06:20:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58441 states to 58441 states and 69224 transitions. [2020-10-13 06:20:49,878 INFO L78 Accepts]: Start accepts. Automaton has 58441 states and 69224 transitions. Word has length 360 [2020-10-13 06:20:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:49,879 INFO L479 AbstractCegarLoop]: Abstraction has 58441 states and 69224 transitions. [2020-10-13 06:20:49,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:20:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 58441 states and 69224 transitions. [2020-10-13 06:20:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-13 06:20:49,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:49,928 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:49,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:20:49,929 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1722256857, now seen corresponding path program 1 times [2020-10-13 06:20:49,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:49,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665301556] [2020-10-13 06:20:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:50,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:54,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-13 06:20:54,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4951 [2020-10-13 06:20:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 06:20:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:55,150 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:20:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:55,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:20:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:20:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:55,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665301556] [2020-10-13 06:20:55,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:55,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:55,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472121240] [2020-10-13 06:20:55,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:55,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:55,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:55,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:55,626 INFO L87 Difference]: Start difference. First operand 58441 states and 69224 transitions. Second operand 7 states. [2020-10-13 06:20:55,839 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:57,664 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:59,317 INFO L93 Difference]: Finished difference Result 117606 states and 145788 transitions. [2020-10-13 06:20:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:59,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-13 06:20:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:59,571 INFO L225 Difference]: With dead ends: 117606 [2020-10-13 06:20:59,572 INFO L226 Difference]: Without dead ends: 64238 [2020-10-13 06:20:59,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64238 states. [2020-10-13 06:21:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64238 to 63019. [2020-10-13 06:21:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63019 states. [2020-10-13 06:21:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63019 states to 63019 states and 74716 transitions. [2020-10-13 06:21:01,212 INFO L78 Accepts]: Start accepts. Automaton has 63019 states and 74716 transitions. Word has length 366 [2020-10-13 06:21:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:01,213 INFO L479 AbstractCegarLoop]: Abstraction has 63019 states and 74716 transitions. [2020-10-13 06:21:01,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 63019 states and 74716 transitions. [2020-10-13 06:21:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 06:21:01,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:01,280 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:01,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:21:01,280 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1003008590, now seen corresponding path program 1 times [2020-10-13 06:21:01,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:01,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362512096] [2020-10-13 06:21:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 06:21:06,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:21:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 06:21:06,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:21:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:21:06,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:06,657 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:06,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:06,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:06,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:06,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:21:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:21:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:21:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:21:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:21:07,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362512096] [2020-10-13 06:21:07,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:07,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:07,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104185714] [2020-10-13 06:21:07,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:07,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:07,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:07,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:07,084 INFO L87 Difference]: Start difference. First operand 63019 states and 74716 transitions. Second operand 7 states. [2020-10-13 06:21:07,225 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:08,465 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:11,051 INFO L93 Difference]: Finished difference Result 124471 states and 150186 transitions. [2020-10-13 06:21:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:11,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-13 06:21:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:11,190 INFO L225 Difference]: With dead ends: 124471 [2020-10-13 06:21:11,190 INFO L226 Difference]: Without dead ends: 62136 [2020-10-13 06:21:11,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62136 states. [2020-10-13 06:21:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62136 to 58801. [2020-10-13 06:21:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58801 states. [2020-10-13 06:21:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58801 states to 58801 states and 67613 transitions. [2020-10-13 06:21:12,262 INFO L78 Accepts]: Start accepts. Automaton has 58801 states and 67613 transitions. Word has length 369 [2020-10-13 06:21:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:12,262 INFO L479 AbstractCegarLoop]: Abstraction has 58801 states and 67613 transitions. [2020-10-13 06:21:12,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 58801 states and 67613 transitions. [2020-10-13 06:21:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-13 06:21:12,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:12,318 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:12,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:21:12,318 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 195634567, now seen corresponding path program 1 times [2020-10-13 06:21:12,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:12,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472678005] [2020-10-13 06:21:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:14,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:14,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-13 06:21:14,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2164 [2020-10-13 06:21:14,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:21:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 06:21:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:14,789 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:14,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:14,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:14,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:21:14,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:14,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:14,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:14,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:14,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:21:14,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:21:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 06:21:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:21:15,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472678005] [2020-10-13 06:21:15,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:15,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:15,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572354629] [2020-10-13 06:21:15,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:15,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:15,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:15,345 INFO L87 Difference]: Start difference. First operand 58801 states and 67613 transitions. Second operand 7 states. [2020-10-13 06:21:15,682 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:16,546 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:18,244 INFO L93 Difference]: Finished difference Result 109390 states and 126341 transitions. [2020-10-13 06:21:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:18,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-13 06:21:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:18,341 INFO L225 Difference]: With dead ends: 109390 [2020-10-13 06:21:18,341 INFO L226 Difference]: Without dead ends: 51273 [2020-10-13 06:21:18,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:21:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51273 states. [2020-10-13 06:21:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51273 to 50830. [2020-10-13 06:21:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50830 states. [2020-10-13 06:21:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50830 states to 50830 states and 56550 transitions. [2020-10-13 06:21:19,562 INFO L78 Accepts]: Start accepts. Automaton has 50830 states and 56550 transitions. Word has length 370 [2020-10-13 06:21:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:19,562 INFO L479 AbstractCegarLoop]: Abstraction has 50830 states and 56550 transitions. [2020-10-13 06:21:19,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 50830 states and 56550 transitions. [2020-10-13 06:21:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-13 06:21:19,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:19,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:19,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:21:19,582 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash 68493674, now seen corresponding path program 1 times [2020-10-13 06:21:19,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:19,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511625710] [2020-10-13 06:21:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:21,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:24,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:24,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-13 06:21:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 06:21:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:21:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:21:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:24,832 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:24,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:24,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:24,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:21:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:24,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:21:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:24,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:21:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:25,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:21:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:21:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:25,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:21:25,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:21:25,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:21:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 06:21:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 202 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 06:21:25,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511625710] [2020-10-13 06:21:25,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:25,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:25,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477058736] [2020-10-13 06:21:25,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:25,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:25,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:25,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:25,328 INFO L87 Difference]: Start difference. First operand 50830 states and 56550 transitions. Second operand 7 states. [2020-10-13 06:21:25,925 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:21:26,237 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134