/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem11_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:40:14,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:40:14,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:40:14,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:40:14,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:40:14,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:40:14,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:40:14,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:40:14,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:40:14,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:40:14,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:40:14,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:40:14,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:40:14,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:40:14,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:40:14,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:40:14,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:40:14,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:40:14,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:40:14,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:40:14,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:40:14,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:40:14,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:40:14,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:40:14,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:40:14,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:40:14,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:40:14,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:40:14,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:40:14,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:40:14,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:40:14,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:40:14,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:40:14,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:40:14,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:40:14,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:40:14,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:40:14,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:40:14,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:40:14,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:40:14,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:40:14,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:40:14,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:40:14,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:40:14,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:40:14,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:40:14,755 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:40:14,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:40:14,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:40:14,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:40:14,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:40:14,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:40:14,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:40:14,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:40:14,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:40:14,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:40:14,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:40:14,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:40:14,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:40:14,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:40:14,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:40:14,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:40:14,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:40:14,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:40:14,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:40:14,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:40:14,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:40:14,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:40:14,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:40:14,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:40:14,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:40:14,760 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:40:15,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:40:15,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:40:15,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:40:15,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:40:15,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:40:15,091 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56.c [2020-10-14 02:40:15,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c47fd87c/5912d1ff1ade48f6a024a36eace680b8/FLAGbdd2740bc [2020-10-14 02:40:15,760 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:40:15,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label56.c [2020-10-14 02:40:15,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c47fd87c/5912d1ff1ade48f6a024a36eace680b8/FLAGbdd2740bc [2020-10-14 02:40:15,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c47fd87c/5912d1ff1ade48f6a024a36eace680b8 [2020-10-14 02:40:15,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:40:15,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:40:15,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:40:15,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:40:15,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:40:15,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:40:15" (1/1) ... [2020-10-14 02:40:15,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:15, skipping insertion in model container [2020-10-14 02:40:15,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:40:15" (1/1) ... [2020-10-14 02:40:15,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:40:16,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:40:16,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:40:16,838 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:40:17,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:40:17,135 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:40:17,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17 WrapperNode [2020-10-14 02:40:17,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:40:17,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:40:17,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:40:17,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:40:17,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... [2020-10-14 02:40:17,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:40:17,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:40:17,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:40:17,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:40:17,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:40:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:40:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:40:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:40:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:40:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:40:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:40:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:40:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:40:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:40:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:40:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:40:19,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:40:19,017 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:40:19,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:40:19 BoogieIcfgContainer [2020-10-14 02:40:19,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:40:19,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:40:19,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:40:19,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:40:19,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:40:15" (1/3) ... [2020-10-14 02:40:19,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7418e649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:40:19, skipping insertion in model container [2020-10-14 02:40:19,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:17" (2/3) ... [2020-10-14 02:40:19,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7418e649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:40:19, skipping insertion in model container [2020-10-14 02:40:19,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:40:19" (3/3) ... [2020-10-14 02:40:19,032 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label56.c [2020-10-14 02:40:19,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:40:19,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:40:19,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:40:19,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:40:19,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:40:19,091 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:40:19,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:40:19,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:40:19,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:40:19,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:40:19,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:40:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:40:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 02:40:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:19,126 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] [2020-10-14 02:40:19,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:19,133 INFO L82 PathProgramCache]: Analyzing trace with hash -223950182, now seen corresponding path program 1 times [2020-10-14 02:40:19,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:19,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507778798] [2020-10-14 02:40:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 02:40:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 02:40:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:19,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:40:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:40:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 02:40:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:40:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:19,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:40:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:19,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:40:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:40:19,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507778798] [2020-10-14 02:40:19,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:40:19,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:40:19,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876437617] [2020-10-14 02:40:19,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:40:19,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:40:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:40:19,885 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 02:40:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:22,193 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-14 02:40:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:22,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 02:40:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:22,231 INFO L225 Difference]: With dead ends: 788 [2020-10-14 02:40:22,231 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 02:40:22,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 02:40:22,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-14 02:40:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-14 02:40:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-14 02:40:22,316 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 47 [2020-10-14 02:40:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:22,317 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-14 02:40:22,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:40:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-14 02:40:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 02:40:22,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:22,323 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:22,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:40:22,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:22,324 INFO L82 PathProgramCache]: Analyzing trace with hash 93548442, now seen corresponding path program 1 times [2020-10-14 02:40:22,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:22,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060930511] [2020-10-14 02:40:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 02:40:23,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:23,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-10-14 02:40:23,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:40:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 02:40:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:23,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:23,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:40:23,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:23,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:40:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 02:40:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:40:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 02:40:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:40:23,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060930511] [2020-10-14 02:40:23,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:23,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:23,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018574895] [2020-10-14 02:40:23,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:23,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:23,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:23,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:23,914 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 5 states. [2020-10-14 02:40:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:26,104 INFO L93 Difference]: Finished difference Result 1248 states and 1816 transitions. [2020-10-14 02:40:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:26,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 02:40:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:26,110 INFO L225 Difference]: With dead ends: 1248 [2020-10-14 02:40:26,110 INFO L226 Difference]: Without dead ends: 829 [2020-10-14 02:40:26,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-14 02:40:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2020-10-14 02:40:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-14 02:40:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1089 transitions. [2020-10-14 02:40:26,154 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1089 transitions. Word has length 119 [2020-10-14 02:40:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:26,155 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1089 transitions. [2020-10-14 02:40:26,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1089 transitions. [2020-10-14 02:40:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 02:40:26,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:26,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:26,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:40:26,159 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:26,159 INFO L82 PathProgramCache]: Analyzing trace with hash 856190846, now seen corresponding path program 1 times [2020-10-14 02:40:26,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:26,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98045115] [2020-10-14 02:40:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 02:40:27,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-14 02:40:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:27,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 02:40:27,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:27,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:27,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:27,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:27,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:40:27,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:27,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:40:27,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:40:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:40:27,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98045115] [2020-10-14 02:40:27,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:27,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:27,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736423606] [2020-10-14 02:40:27,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:27,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:27,970 INFO L87 Difference]: Start difference. First operand 815 states and 1089 transitions. Second operand 5 states. [2020-10-14 02:40:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:30,187 INFO L93 Difference]: Finished difference Result 2402 states and 3256 transitions. [2020-10-14 02:40:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:30,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 02:40:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:30,203 INFO L225 Difference]: With dead ends: 2402 [2020-10-14 02:40:30,203 INFO L226 Difference]: Without dead ends: 1593 [2020-10-14 02:40:30,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2020-10-14 02:40:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1582. [2020-10-14 02:40:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-10-14 02:40:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2096 transitions. [2020-10-14 02:40:30,275 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2096 transitions. Word has length 121 [2020-10-14 02:40:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:30,277 INFO L479 AbstractCegarLoop]: Abstraction has 1582 states and 2096 transitions. [2020-10-14 02:40:30,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2096 transitions. [2020-10-14 02:40:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 02:40:30,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:30,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:30,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:40:30,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -92743950, now seen corresponding path program 1 times [2020-10-14 02:40:30,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:30,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432426601] [2020-10-14 02:40:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:31,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 02:40:31,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-14 02:40:31,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:31,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 02:40:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 02:40:31,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:40:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:31,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:31,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:31,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 02:40:31,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:40:31,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:31,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:40:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:40:31,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432426601] [2020-10-14 02:40:31,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:31,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:31,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258807170] [2020-10-14 02:40:31,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:31,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:31,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:31,815 INFO L87 Difference]: Start difference. First operand 1582 states and 2096 transitions. Second operand 5 states. [2020-10-14 02:40:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:34,322 INFO L93 Difference]: Finished difference Result 3169 states and 4446 transitions. [2020-10-14 02:40:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:34,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-14 02:40:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:34,337 INFO L225 Difference]: With dead ends: 3169 [2020-10-14 02:40:34,337 INFO L226 Difference]: Without dead ends: 2363 [2020-10-14 02:40:34,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-14 02:40:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2355. [2020-10-14 02:40:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-10-14 02:40:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3139 transitions. [2020-10-14 02:40:34,402 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3139 transitions. Word has length 131 [2020-10-14 02:40:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:34,403 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 3139 transitions. [2020-10-14 02:40:34,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3139 transitions. [2020-10-14 02:40:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 02:40:34,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:34,406 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:34,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:40:34,406 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:34,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1394512161, now seen corresponding path program 1 times [2020-10-14 02:40:34,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:34,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213163911] [2020-10-14 02:40:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 02:40:35,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-14 02:40:35,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 02:40:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 02:40:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:35,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:40:35,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 02:40:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:40:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:40:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:40:35,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213163911] [2020-10-14 02:40:35,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:35,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:35,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532621663] [2020-10-14 02:40:35,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:35,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:35,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:35,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:35,946 INFO L87 Difference]: Start difference. First operand 2355 states and 3139 transitions. Second operand 5 states. [2020-10-14 02:40:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:38,220 INFO L93 Difference]: Finished difference Result 5860 states and 8055 transitions. [2020-10-14 02:40:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:38,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 02:40:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:38,255 INFO L225 Difference]: With dead ends: 5860 [2020-10-14 02:40:38,256 INFO L226 Difference]: Without dead ends: 3511 [2020-10-14 02:40:38,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:38,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2020-10-14 02:40:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3496. [2020-10-14 02:40:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-10-14 02:40:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 4590 transitions. [2020-10-14 02:40:38,375 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 4590 transitions. Word has length 148 [2020-10-14 02:40:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:38,375 INFO L479 AbstractCegarLoop]: Abstraction has 3496 states and 4590 transitions. [2020-10-14 02:40:38,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 4590 transitions. [2020-10-14 02:40:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 02:40:38,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:38,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:38,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:40:38,383 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash -613714099, now seen corresponding path program 1 times [2020-10-14 02:40:38,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:38,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014763950] [2020-10-14 02:40:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:42,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:42,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 02:40:42,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:40:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4036 [2020-10-14 02:40:42,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:42,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 02:40:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:40:42,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:42,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:42,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:40:42,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:42,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:42,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 02:40:42,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 02:40:42,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:42,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:40:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 02:40:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:42,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:40:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 02:40:42,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:42,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:42,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:40:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:40:43,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014763950] [2020-10-14 02:40:43,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:43,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:43,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060215358] [2020-10-14 02:40:43,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:43,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:43,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:43,138 INFO L87 Difference]: Start difference. First operand 3496 states and 4590 transitions. Second operand 7 states. [2020-10-14 02:40:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:45,421 INFO L93 Difference]: Finished difference Result 8538 states and 11518 transitions. [2020-10-14 02:40:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:40:45,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-14 02:40:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:45,446 INFO L225 Difference]: With dead ends: 8538 [2020-10-14 02:40:45,446 INFO L226 Difference]: Without dead ends: 5048 [2020-10-14 02:40:45,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:40:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-10-14 02:40:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 4473. [2020-10-14 02:40:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4473 states. [2020-10-14 02:40:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 5704 transitions. [2020-10-14 02:40:45,559 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 5704 transitions. Word has length 202 [2020-10-14 02:40:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:45,560 INFO L479 AbstractCegarLoop]: Abstraction has 4473 states and 5704 transitions. [2020-10-14 02:40:45,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 5704 transitions. [2020-10-14 02:40:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 02:40:45,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:45,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:45,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:40:45,566 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1388386299, now seen corresponding path program 1 times [2020-10-14 02:40:45,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:45,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666816214] [2020-10-14 02:40:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 02:40:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:40:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4023 [2020-10-14 02:40:49,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:40:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:40:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:49,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:49,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:40:49,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 02:40:49,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:40:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 02:40:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:40:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 02:40:50,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:40:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:40:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:40:50,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666816214] [2020-10-14 02:40:50,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:50,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:50,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345040826] [2020-10-14 02:40:50,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:50,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:50,484 INFO L87 Difference]: Start difference. First operand 4473 states and 5704 transitions. Second operand 7 states. [2020-10-14 02:40:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:54,463 INFO L93 Difference]: Finished difference Result 9064 states and 12287 transitions. [2020-10-14 02:40:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:54,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-14 02:40:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:54,489 INFO L225 Difference]: With dead ends: 9064 [2020-10-14 02:40:54,489 INFO L226 Difference]: Without dead ends: 5745 [2020-10-14 02:40:54,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5745 states. [2020-10-14 02:40:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5745 to 5272. [2020-10-14 02:40:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5272 states. [2020-10-14 02:40:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 6697 transitions. [2020-10-14 02:40:54,652 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 6697 transitions. Word has length 210 [2020-10-14 02:40:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:54,652 INFO L479 AbstractCegarLoop]: Abstraction has 5272 states and 6697 transitions. [2020-10-14 02:40:54,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 6697 transitions. [2020-10-14 02:40:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 02:40:54,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:54,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:54,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:40:54,661 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:54,661 INFO L82 PathProgramCache]: Analyzing trace with hash -630883482, now seen corresponding path program 1 times [2020-10-14 02:40:54,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:54,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118725408] [2020-10-14 02:40:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 02:40:57,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3068 [2020-10-14 02:40:57,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:40:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:57,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:57,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:40:57,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:40:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:40:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:40:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:58,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:58,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 02:40:58,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:58,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:40:58,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118725408] [2020-10-14 02:40:58,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:58,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:58,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214740804] [2020-10-14 02:40:58,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:58,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:58,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:58,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:58,280 INFO L87 Difference]: Start difference. First operand 5272 states and 6697 transitions. Second operand 7 states. [2020-10-14 02:41:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:01,717 INFO L93 Difference]: Finished difference Result 9413 states and 12037 transitions. [2020-10-14 02:41:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:41:01,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 02:41:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:01,737 INFO L225 Difference]: With dead ends: 9413 [2020-10-14 02:41:01,737 INFO L226 Difference]: Without dead ends: 5297 [2020-10-14 02:41:01,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:41:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2020-10-14 02:41:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 5280. [2020-10-14 02:41:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5280 states. [2020-10-14 02:41:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 6700 transitions. [2020-10-14 02:41:01,854 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 6700 transitions. Word has length 213 [2020-10-14 02:41:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:01,855 INFO L479 AbstractCegarLoop]: Abstraction has 5280 states and 6700 transitions. [2020-10-14 02:41:01,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 6700 transitions. [2020-10-14 02:41:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 02:41:01,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:01,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:01,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:41:01,863 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:01,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2040406957, now seen corresponding path program 1 times [2020-10-14 02:41:01,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:01,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782308011] [2020-10-14 02:41:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2330 [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 02:41:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:41:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:04,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:04,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:04,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:41:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 02:41:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:41:04,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 02:41:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:41:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:41:04,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782308011] [2020-10-14 02:41:04,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:04,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:04,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305550055] [2020-10-14 02:41:04,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:04,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:04,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:04,564 INFO L87 Difference]: Start difference. First operand 5280 states and 6700 transitions. Second operand 7 states. [2020-10-14 02:41:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:06,852 INFO L93 Difference]: Finished difference Result 9338 states and 12389 transitions. [2020-10-14 02:41:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:41:06,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 02:41:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:06,886 INFO L225 Difference]: With dead ends: 9338 [2020-10-14 02:41:06,887 INFO L226 Difference]: Without dead ends: 5404 [2020-10-14 02:41:06,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2020-10-14 02:41:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5288. [2020-10-14 02:41:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5288 states. [2020-10-14 02:41:07,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 6667 transitions. [2020-10-14 02:41:07,013 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 6667 transitions. Word has length 222 [2020-10-14 02:41:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:07,013 INFO L479 AbstractCegarLoop]: Abstraction has 5288 states and 6667 transitions. [2020-10-14 02:41:07,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 6667 transitions. [2020-10-14 02:41:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 02:41:07,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:07,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:07,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:41:07,023 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:07,024 INFO L82 PathProgramCache]: Analyzing trace with hash -996547595, now seen corresponding path program 1 times [2020-10-14 02:41:07,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:07,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508530397] [2020-10-14 02:41:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:08,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:08,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 02:41:08,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-10-14 02:41:08,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:08,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 02:41:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:41:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:08,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:08,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:08,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:08,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:08,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:41:08,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:41:08,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:08,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:08,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:08,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:08,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 02:41:08,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 02:41:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:09,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 02:41:09,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:41:09,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:41:09,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508530397] [2020-10-14 02:41:09,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:09,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:09,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485131874] [2020-10-14 02:41:09,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:09,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:09,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:09,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:09,169 INFO L87 Difference]: Start difference. First operand 5288 states and 6667 transitions. Second operand 7 states. [2020-10-14 02:41:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:12,118 INFO L93 Difference]: Finished difference Result 11656 states and 16112 transitions. [2020-10-14 02:41:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:41:12,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-14 02:41:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:12,150 INFO L225 Difference]: With dead ends: 11656 [2020-10-14 02:41:12,151 INFO L226 Difference]: Without dead ends: 6368 [2020-10-14 02:41:12,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:41:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6368 states. [2020-10-14 02:41:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6368 to 6110. [2020-10-14 02:41:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-10-14 02:41:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7604 transitions. [2020-10-14 02:41:12,326 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7604 transitions. Word has length 230 [2020-10-14 02:41:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:12,326 INFO L479 AbstractCegarLoop]: Abstraction has 6110 states and 7604 transitions. [2020-10-14 02:41:12,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7604 transitions. [2020-10-14 02:41:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 02:41:12,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:12,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:12,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:41:12,339 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:12,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1504406378, now seen corresponding path program 1 times [2020-10-14 02:41:12,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:12,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728022312] [2020-10-14 02:41:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 02:41:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 02:41:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:14,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:14,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:14,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:41:14,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:41:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 02:41:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 02:41:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:41:14,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728022312] [2020-10-14 02:41:14,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:14,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:14,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238575480] [2020-10-14 02:41:14,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:14,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:14,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:14,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:14,931 INFO L87 Difference]: Start difference. First operand 6110 states and 7604 transitions. Second operand 7 states. [2020-10-14 02:41:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:17,687 INFO L93 Difference]: Finished difference Result 14182 states and 18100 transitions. [2020-10-14 02:41:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:41:17,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-14 02:41:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:17,712 INFO L225 Difference]: With dead ends: 14182 [2020-10-14 02:41:17,713 INFO L226 Difference]: Without dead ends: 8266 [2020-10-14 02:41:17,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:41:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2020-10-14 02:41:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 7858. [2020-10-14 02:41:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7858 states. [2020-10-14 02:41:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 9854 transitions. [2020-10-14 02:41:17,900 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 9854 transitions. Word has length 231 [2020-10-14 02:41:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:17,900 INFO L479 AbstractCegarLoop]: Abstraction has 7858 states and 9854 transitions. [2020-10-14 02:41:17,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 9854 transitions. [2020-10-14 02:41:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 02:41:17,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:17,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:17,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:41:17,914 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash 732889833, now seen corresponding path program 1 times [2020-10-14 02:41:17,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:17,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839500655] [2020-10-14 02:41:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:19,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:19,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 02:41:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-14 02:41:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:19,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-14 02:41:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 02:41:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:19,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:19,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:19,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:19,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:19,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:19,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:19,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:19,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:19,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:41:19,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:19,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:19,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 02:41:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:19,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:41:19,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:19,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:41:19,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:19,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:41:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 02:41:19,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839500655] [2020-10-14 02:41:19,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:19,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:41:19,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121036683] [2020-10-14 02:41:19,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:41:19,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:19,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:41:19,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:41:19,997 INFO L87 Difference]: Start difference. First operand 7858 states and 9854 transitions. Second operand 6 states. [2020-10-14 02:41:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:23,052 INFO L93 Difference]: Finished difference Result 17846 states and 22572 transitions. [2020-10-14 02:41:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:41:23,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-14 02:41:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:23,082 INFO L225 Difference]: With dead ends: 17846 [2020-10-14 02:41:23,082 INFO L226 Difference]: Without dead ends: 10182 [2020-10-14 02:41:23,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:41:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2020-10-14 02:41:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 9205. [2020-10-14 02:41:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9205 states. [2020-10-14 02:41:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9205 states to 9205 states and 11648 transitions. [2020-10-14 02:41:23,404 INFO L78 Accepts]: Start accepts. Automaton has 9205 states and 11648 transitions. Word has length 236 [2020-10-14 02:41:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:23,404 INFO L479 AbstractCegarLoop]: Abstraction has 9205 states and 11648 transitions. [2020-10-14 02:41:23,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:41:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9205 states and 11648 transitions. [2020-10-14 02:41:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 02:41:23,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:23,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:23,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:41:23,413 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1472571337, now seen corresponding path program 1 times [2020-10-14 02:41:23,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:23,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497330528] [2020-10-14 02:41:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 02:41:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3657 [2020-10-14 02:41:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:27,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:41:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:41:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:27,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:27,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:27,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:27,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:41:27,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:27,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:27,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:41:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:41:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:27,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:41:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:27,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 02:41:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:27,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 02:41:27,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 02:41:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:27,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:41:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:41:27,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497330528] [2020-10-14 02:41:27,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:27,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:27,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330248519] [2020-10-14 02:41:27,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:27,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:27,709 INFO L87 Difference]: Start difference. First operand 9205 states and 11648 transitions. Second operand 7 states. [2020-10-14 02:41:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:31,424 INFO L93 Difference]: Finished difference Result 24302 states and 32881 transitions. [2020-10-14 02:41:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:41:31,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-14 02:41:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:31,468 INFO L225 Difference]: With dead ends: 24302 [2020-10-14 02:41:31,469 INFO L226 Difference]: Without dead ends: 15291 [2020-10-14 02:41:31,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15291 states. [2020-10-14 02:41:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15291 to 14402. [2020-10-14 02:41:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14402 states. [2020-10-14 02:41:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14402 states to 14402 states and 17644 transitions. [2020-10-14 02:41:31,855 INFO L78 Accepts]: Start accepts. Automaton has 14402 states and 17644 transitions. Word has length 243 [2020-10-14 02:41:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:31,856 INFO L479 AbstractCegarLoop]: Abstraction has 14402 states and 17644 transitions. [2020-10-14 02:41:31,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 14402 states and 17644 transitions. [2020-10-14 02:41:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 02:41:31,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:31,871 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, 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] [2020-10-14 02:41:31,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:41:31,872 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:31,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1938373501, now seen corresponding path program 1 times [2020-10-14 02:41:31,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:31,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260884738] [2020-10-14 02:41:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 02:41:34,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2539 [2020-10-14 02:41:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 243 [2020-10-14 02:41:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 02:41:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:34,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:34,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 02:41:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 02:41:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 02:41:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:34,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 02:41:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:41:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:34,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 02:41:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 02:41:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260884738] [2020-10-14 02:41:34,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:34,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:41:34,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610704831] [2020-10-14 02:41:34,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:41:34,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:34,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:41:34,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:41:34,789 INFO L87 Difference]: Start difference. First operand 14402 states and 17644 transitions. Second operand 5 states. [2020-10-14 02:41:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:36,882 INFO L93 Difference]: Finished difference Result 16508 states and 20302 transitions. [2020-10-14 02:41:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:41:36,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 278 [2020-10-14 02:41:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:36,921 INFO L225 Difference]: With dead ends: 16508 [2020-10-14 02:41:36,921 INFO L226 Difference]: Without dead ends: 16506 [2020-10-14 02:41:36,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:41:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16506 states. [2020-10-14 02:41:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16506 to 16298. [2020-10-14 02:41:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16298 states. [2020-10-14 02:41:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16298 states to 16298 states and 20081 transitions. [2020-10-14 02:41:37,212 INFO L78 Accepts]: Start accepts. Automaton has 16298 states and 20081 transitions. Word has length 278 [2020-10-14 02:41:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:37,212 INFO L479 AbstractCegarLoop]: Abstraction has 16298 states and 20081 transitions. [2020-10-14 02:41:37,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:41:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16298 states and 20081 transitions. [2020-10-14 02:41:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 02:41:37,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:37,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:37,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:41:37,248 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:37,248 INFO L82 PathProgramCache]: Analyzing trace with hash -318155535, now seen corresponding path program 1 times [2020-10-14 02:41:37,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:37,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140087028] [2020-10-14 02:41:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2395 [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-14 02:41:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:41:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:39,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:39,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:41:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:41:39,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:39,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-14 02:41:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:40,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:40,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:40,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 02:41:40,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:40,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:41:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 02:41:40,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140087028] [2020-10-14 02:41:40,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:40,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:40,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559199318] [2020-10-14 02:41:40,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:40,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:40,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:40,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:40,194 INFO L87 Difference]: Start difference. First operand 16298 states and 20081 transitions. Second operand 7 states. [2020-10-14 02:41:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:43,946 INFO L93 Difference]: Finished difference Result 30149 states and 39098 transitions. [2020-10-14 02:41:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:41:43,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 02:41:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:44,000 INFO L225 Difference]: With dead ends: 30149 [2020-10-14 02:41:44,000 INFO L226 Difference]: Without dead ends: 18105 [2020-10-14 02:41:44,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18105 states. [2020-10-14 02:41:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18105 to 17803. [2020-10-14 02:41:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17803 states. [2020-10-14 02:41:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17803 states to 17803 states and 21767 transitions. [2020-10-14 02:41:44,377 INFO L78 Accepts]: Start accepts. Automaton has 17803 states and 21767 transitions. Word has length 417 [2020-10-14 02:41:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:44,378 INFO L479 AbstractCegarLoop]: Abstraction has 17803 states and 21767 transitions. [2020-10-14 02:41:44,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17803 states and 21767 transitions. [2020-10-14 02:41:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-14 02:41:44,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:44,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:44,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:41:44,416 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:44,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1509546547, now seen corresponding path program 1 times [2020-10-14 02:41:44,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:44,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148197457] [2020-10-14 02:41:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:44,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-14 02:41:44,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:44,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-14 02:41:44,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:44,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:41:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:41:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:45,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:41:45,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:45,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:41:45,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:45,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:41:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:45,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:41:45,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:41:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:41:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:41:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 02:41:45,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148197457] [2020-10-14 02:41:45,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:45,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:41:45,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364322185] [2020-10-14 02:41:45,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:41:45,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:45,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:41:45,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:41:45,743 INFO L87 Difference]: Start difference. First operand 17803 states and 21767 transitions. Second operand 8 states. [2020-10-14 02:41:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:48,652 INFO L93 Difference]: Finished difference Result 33084 states and 40353 transitions. [2020-10-14 02:41:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:41:48,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-10-14 02:41:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:48,697 INFO L225 Difference]: With dead ends: 33084 [2020-10-14 02:41:48,697 INFO L226 Difference]: Without dead ends: 19535 [2020-10-14 02:41:48,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:41:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19535 states. [2020-10-14 02:41:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19535 to 17803. [2020-10-14 02:41:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17803 states. [2020-10-14 02:41:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17803 states to 17803 states and 21707 transitions. [2020-10-14 02:41:49,026 INFO L78 Accepts]: Start accepts. Automaton has 17803 states and 21707 transitions. Word has length 431 [2020-10-14 02:41:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:49,027 INFO L479 AbstractCegarLoop]: Abstraction has 17803 states and 21707 transitions. [2020-10-14 02:41:49,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:41:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 17803 states and 21707 transitions. [2020-10-14 02:41:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-14 02:41:49,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:49,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:49,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:41:49,057 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:49,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1092915897, now seen corresponding path program 1 times [2020-10-14 02:41:49,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:49,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121705377] [2020-10-14 02:41:49,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:52,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:41:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 02:41:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:52,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:52,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:41:52,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:52,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:52,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:52,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:52,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:41:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:52,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:41:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:52,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:52,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:41:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:53,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-14 02:41:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:53,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:41:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 250 proven. 134 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 02:41:53,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121705377] [2020-10-14 02:41:53,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:53,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:53,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109466749] [2020-10-14 02:41:53,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:53,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:53,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:53,206 INFO L87 Difference]: Start difference. First operand 17803 states and 21707 transitions. Second operand 7 states. [2020-10-14 02:41:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:56,754 INFO L93 Difference]: Finished difference Result 37629 states and 48703 transitions. [2020-10-14 02:41:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:41:56,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-14 02:41:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:56,826 INFO L225 Difference]: With dead ends: 37629 [2020-10-14 02:41:56,827 INFO L226 Difference]: Without dead ends: 20802 [2020-10-14 02:41:56,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20802 states. [2020-10-14 02:41:57,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20802 to 20284. [2020-10-14 02:41:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20284 states. [2020-10-14 02:41:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20284 states to 20284 states and 24495 transitions. [2020-10-14 02:41:57,417 INFO L78 Accepts]: Start accepts. Automaton has 20284 states and 24495 transitions. Word has length 452 [2020-10-14 02:41:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:57,418 INFO L479 AbstractCegarLoop]: Abstraction has 20284 states and 24495 transitions. [2020-10-14 02:41:57,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 20284 states and 24495 transitions. [2020-10-14 02:41:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-14 02:41:57,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:57,455 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:57,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:41:57,455 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1435059696, now seen corresponding path program 1 times [2020-10-14 02:41:57,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:57,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466928213] [2020-10-14 02:41:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-14 02:42:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2629 [2020-10-14 02:42:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 02:42:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:42:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:42:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 02:42:00,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:42:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 02:42:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:42:00,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 02:42:00,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:42:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 02:42:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:00,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 02:42:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:00,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-14 02:42:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:00,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 251 proven. 168 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 02:42:00,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466928213] [2020-10-14 02:42:00,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:00,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:42:00,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429082697] [2020-10-14 02:42:00,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:42:00,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:42:00,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:42:00,740 INFO L87 Difference]: Start difference. First operand 20284 states and 24495 transitions. Second operand 7 states. [2020-10-14 02:42:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:03,569 INFO L93 Difference]: Finished difference Result 41351 states and 49978 transitions. [2020-10-14 02:42:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:42:03,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-14 02:42:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:03,618 INFO L225 Difference]: With dead ends: 41351 [2020-10-14 02:42:03,618 INFO L226 Difference]: Without dead ends: 22043 [2020-10-14 02:42:03,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:42:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22043 states. [2020-10-14 02:42:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22043 to 22011. [2020-10-14 02:42:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22011 states. [2020-10-14 02:42:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22011 states to 22011 states and 26271 transitions. [2020-10-14 02:42:04,186 INFO L78 Accepts]: Start accepts. Automaton has 22011 states and 26271 transitions. Word has length 517 [2020-10-14 02:42:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:04,187 INFO L479 AbstractCegarLoop]: Abstraction has 22011 states and 26271 transitions. [2020-10-14 02:42:04,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:42:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 22011 states and 26271 transitions. [2020-10-14 02:42:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-14 02:42:04,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:04,215 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:04,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:42:04,215 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1004351817, now seen corresponding path program 1 times [2020-10-14 02:42:04,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:04,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550844713] [2020-10-14 02:42:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-14 02:42:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-10-14 02:42:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:07,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 02:42:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:42:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 498 [2020-10-14 02:42:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:07,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:07,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:07,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:07,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:42:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:42:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:42:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:08,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:42:08,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:42:08,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:08,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:42:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:42:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:42:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:08,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:08,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:08,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:08,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 02:42:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:08,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:42:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:42:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:08,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:08,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:42:08,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:08,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:42:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 377 proven. 138 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-14 02:42:09,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550844713] [2020-10-14 02:42:09,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:09,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 02:42:09,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118289927] [2020-10-14 02:42:09,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:42:09,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:09,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:42:09,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:42:09,081 INFO L87 Difference]: Start difference. First operand 22011 states and 26271 transitions. Second operand 10 states. [2020-10-14 02:42:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:15,163 INFO L93 Difference]: Finished difference Result 51121 states and 64666 transitions. [2020-10-14 02:42:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 02:42:15,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 533 [2020-10-14 02:42:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:15,247 INFO L225 Difference]: With dead ends: 51121 [2020-10-14 02:42:15,247 INFO L226 Difference]: Without dead ends: 33370 [2020-10-14 02:42:15,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 02:42:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33370 states. [2020-10-14 02:42:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33370 to 30837. [2020-10-14 02:42:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30837 states. [2020-10-14 02:42:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30837 states to 30837 states and 36710 transitions. [2020-10-14 02:42:15,893 INFO L78 Accepts]: Start accepts. Automaton has 30837 states and 36710 transitions. Word has length 533 [2020-10-14 02:42:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:15,894 INFO L479 AbstractCegarLoop]: Abstraction has 30837 states and 36710 transitions. [2020-10-14 02:42:15,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:42:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 30837 states and 36710 transitions. [2020-10-14 02:42:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-14 02:42:15,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:15,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:15,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:42:15,947 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:15,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1513083787, now seen corresponding path program 1 times [2020-10-14 02:42:15,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:15,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735584137] [2020-10-14 02:42:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:16,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 588 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 02:42:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:21,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:21,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 02:42:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 02:42:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:42:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:21,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 02:42:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 02:42:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 02:42:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-14 02:42:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:21,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:21,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:21,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 02:42:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:21,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 466 proven. 219 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-14 02:42:22,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735584137] [2020-10-14 02:42:22,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:22,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:42:22,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640399136] [2020-10-14 02:42:22,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:42:22,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:22,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:42:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:42:22,050 INFO L87 Difference]: Start difference. First operand 30837 states and 36710 transitions. Second operand 10 states. [2020-10-14 02:42:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:28,380 INFO L93 Difference]: Finished difference Result 70545 states and 87614 transitions. [2020-10-14 02:42:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 02:42:28,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 572 [2020-10-14 02:42:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:28,481 INFO L225 Difference]: With dead ends: 70545 [2020-10-14 02:42:28,482 INFO L226 Difference]: Without dead ends: 43972 [2020-10-14 02:42:28,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-14 02:42:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43972 states. [2020-10-14 02:42:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43972 to 41970. [2020-10-14 02:42:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41970 states. [2020-10-14 02:42:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41970 states to 41970 states and 49751 transitions. [2020-10-14 02:42:29,264 INFO L78 Accepts]: Start accepts. Automaton has 41970 states and 49751 transitions. Word has length 572 [2020-10-14 02:42:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:29,265 INFO L479 AbstractCegarLoop]: Abstraction has 41970 states and 49751 transitions. [2020-10-14 02:42:29,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:42:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 41970 states and 49751 transitions. [2020-10-14 02:42:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-14 02:42:29,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:29,321 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 02:42:29,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:42:29,322 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:29,322 INFO L82 PathProgramCache]: Analyzing trace with hash -988041771, now seen corresponding path program 1 times [2020-10-14 02:42:29,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:29,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904397383] [2020-10-14 02:42:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:30,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-14 02:42:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:42:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 02:42:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:34,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 367 [2020-10-14 02:42:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 02:42:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:34,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:34,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:42:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:42:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:34,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:42:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:34,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:42:34,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:42:34,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:34,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:34,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:34,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-14 02:42:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:34,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:42:34,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:42:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:34,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 02:42:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-14 02:42:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:35,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:35,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:42:35,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 02:42:35,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:35,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 02:42:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-14 02:42:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:35,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:35,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:35,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2020-10-14 02:42:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:35,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 616 proven. 268 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2020-10-14 02:42:35,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904397383] [2020-10-14 02:42:35,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:35,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:42:35,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657239242] [2020-10-14 02:42:35,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:42:35,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:35,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:42:35,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:42:35,731 INFO L87 Difference]: Start difference. First operand 41970 states and 49751 transitions. Second operand 7 states. [2020-10-14 02:42:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:39,254 INFO L93 Difference]: Finished difference Result 86314 states and 105978 transitions. [2020-10-14 02:42:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:42:39,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 829 [2020-10-14 02:42:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:39,362 INFO L225 Difference]: With dead ends: 86314 [2020-10-14 02:42:39,362 INFO L226 Difference]: Without dead ends: 45124 [2020-10-14 02:42:39,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:42:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45124 states. [2020-10-14 02:42:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45124 to 44228. [2020-10-14 02:42:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44228 states. [2020-10-14 02:42:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44228 states to 44228 states and 51856 transitions. [2020-10-14 02:42:40,094 INFO L78 Accepts]: Start accepts. Automaton has 44228 states and 51856 transitions. Word has length 829 [2020-10-14 02:42:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:40,094 INFO L479 AbstractCegarLoop]: Abstraction has 44228 states and 51856 transitions. [2020-10-14 02:42:40,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:42:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 44228 states and 51856 transitions. [2020-10-14 02:42:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-14 02:42:40,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:40,147 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:40,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 02:42:40,147 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:40,147 INFO L82 PathProgramCache]: Analyzing trace with hash 270019404, now seen corresponding path program 1 times [2020-10-14 02:42:40,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:40,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160850437] [2020-10-14 02:42:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-14 02:42:45,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:42:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 02:42:45,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-14 02:42:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 02:42:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:45,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:42:45,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:42:45,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:42:45,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:42:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:42:45,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-14 02:42:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:42:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-14 02:42:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:42:45,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:42:45,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:42:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-14 02:42:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-14 02:42:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:42:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-14 02:42:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 02:42:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:45,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 804 [2020-10-14 02:42:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:46,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3247 backedges. 581 proven. 527 refuted. 0 times theorem prover too weak. 2139 trivial. 0 not checked. [2020-10-14 02:42:46,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160850437] [2020-10-14 02:42:46,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:46,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:42:46,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758536454] [2020-10-14 02:42:46,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:42:46,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:42:46,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:42:46,500 INFO L87 Difference]: Start difference. First operand 44228 states and 51856 transitions. Second operand 7 states. [2020-10-14 02:42:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:51,422 INFO L93 Difference]: Finished difference Result 86275 states and 105118 transitions. [2020-10-14 02:42:51,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:42:51,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-14 02:42:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:51,530 INFO L225 Difference]: With dead ends: 86275 [2020-10-14 02:42:51,531 INFO L226 Difference]: Without dead ends: 46695 [2020-10-14 02:42:51,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:42:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46695 states. [2020-10-14 02:42:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46695 to 44448. [2020-10-14 02:42:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44448 states. [2020-10-14 02:42:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44448 states to 44448 states and 52075 transitions. [2020-10-14 02:42:52,201 INFO L78 Accepts]: Start accepts. Automaton has 44448 states and 52075 transitions. Word has length 980 [2020-10-14 02:42:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:52,202 INFO L479 AbstractCegarLoop]: Abstraction has 44448 states and 52075 transitions. [2020-10-14 02:42:52,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:42:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 44448 states and 52075 transitions. [2020-10-14 02:42:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-14 02:42:52,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:52,240 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:52,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 02:42:52,240 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1520708918, now seen corresponding path program 1 times [2020-10-14 02:42:52,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:52,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323403089] [2020-10-14 02:42:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-14 02:42:57,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:42:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 02:42:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:42:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 02:42:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:42:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:42:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:42:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:42:57,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:42:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:42:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-14 02:42:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:42:57,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:42:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:42:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-14 02:42:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:42:57,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 02:42:57,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:42:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-10-14 02:42:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:42:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2020-10-14 02:42:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:57,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:58,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:58,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:58,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2020-10-14 02:42:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:58,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:58,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:58,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 595 proven. 527 refuted. 0 times theorem prover too weak. 2199 trivial. 0 not checked. [2020-10-14 02:42:59,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323403089] [2020-10-14 02:42:59,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:59,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:42:59,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972766769] [2020-10-14 02:42:59,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:42:59,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:42:59,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:42:59,318 INFO L87 Difference]: Start difference. First operand 44448 states and 52075 transitions. Second operand 7 states. [2020-10-14 02:43:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:02,908 INFO L93 Difference]: Finished difference Result 66018 states and 78149 transitions. [2020-10-14 02:43:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:43:02,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 994 [2020-10-14 02:43:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:02,910 INFO L225 Difference]: With dead ends: 66018 [2020-10-14 02:43:02,910 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 02:43:02,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:43:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 02:43:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 02:43:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 02:43:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 02:43:02,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 994 [2020-10-14 02:43:02,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:02,962 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 02:43:02,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:43:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 02:43:02,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 02:43:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 02:43:02,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 02:43:03,114 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-10-14 02:43:26,803 WARN L193 SmtUtils]: Spent 20.94 s on a formula simplification. DAG size of input: 2262 DAG size of output: 2091 [2020-10-14 02:43:47,857 WARN L193 SmtUtils]: Spent 21.04 s on a formula simplification. DAG size of input: 2262 DAG size of output: 2091 [2020-10-14 02:43:55,215 WARN L193 SmtUtils]: Spent 7.16 s on a formula simplification. DAG size of input: 655 DAG size of output: 130