/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:43:21,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:43:21,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:43:21,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:43:21,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:43:21,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:43:21,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:43:21,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:43:21,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:43:21,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:43:21,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:43:21,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:43:21,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:43:21,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:43:21,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:43:21,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:43:21,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:43:21,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:43:21,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:43:21,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:43:21,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:43:21,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:43:21,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:43:21,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:43:21,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:43:21,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:43:21,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:43:21,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:43:21,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:43:21,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:43:21,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:43:21,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:43:21,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:43:21,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:43:21,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:43:21,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:43:21,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:43:21,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:43:21,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:43:21,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:43:21,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:43:21,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:43:21,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:43:21,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:43:21,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:43:21,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:43:21,372 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:43:21,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:43:21,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:43:21,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:43:21,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:43:21,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:43:21,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:43:21,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:43:21,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:43:21,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:43:21,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:43:21,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:43:21,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:43:21,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:43:21,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:43:21,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:43:21,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:43:21,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:43:21,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:43:21,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:43:21,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:43:21,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:43:21,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:43:21,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:43:21,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:43:21,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:43:21,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:43:21,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:43:21,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:43:21,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:43:21,704 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:43:21,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:43:21,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e03b74df7/c539cf1a6f8549d799566e19feb5b8ba/FLAG78b9c4ea8 [2020-10-13 13:43:22,454 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:43:22,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:43:22,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e03b74df7/c539cf1a6f8549d799566e19feb5b8ba/FLAG78b9c4ea8 [2020-10-13 13:43:22,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e03b74df7/c539cf1a6f8549d799566e19feb5b8ba [2020-10-13 13:43:22,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:43:22,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:43:22,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:43:22,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:43:22,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:43:22,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:43:22" (1/1) ... [2020-10-13 13:43:22,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:22, skipping insertion in model container [2020-10-13 13:43:22,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:43:22" (1/1) ... [2020-10-13 13:43:22,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:43:22,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:43:23,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:43:23,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:43:23,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:43:23,519 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:43:23,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23 WrapperNode [2020-10-13 13:43:23,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:43:23,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:43:23,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:43:23,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:43:23,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... [2020-10-13 13:43:23,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:43:23,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:43:23,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:43:23,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:43:23,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:43:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:43:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:43:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:43:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:43:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:43:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:43:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-13 13:43:23,791 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-13 13:43:23,791 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:43:23,791 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:43:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:43:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:43:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:43:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:43:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:43:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:43:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:43:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:43:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:43:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:43:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:43:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:43:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:43:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:43:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:43:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 13:43:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:43:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:43:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:43:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:43:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:43:25,873 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:43:25,873 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:43:25,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:43:25 BoogieIcfgContainer [2020-10-13 13:43:25,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:43:25,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:43:25,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:43:25,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:43:25,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:43:22" (1/3) ... [2020-10-13 13:43:25,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6916177c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:43:25, skipping insertion in model container [2020-10-13 13:43:25,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:43:23" (2/3) ... [2020-10-13 13:43:25,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6916177c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:43:25, skipping insertion in model container [2020-10-13 13:43:25,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:43:25" (3/3) ... [2020-10-13 13:43:25,902 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:43:25,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:43:25,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:43:25,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:43:25,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:43:25,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:43:25,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:43:25,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:43:25,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:43:25,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:43:25,971 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:43:25,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:43:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states. [2020-10-13 13:43:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 13:43:26,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:26,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:43:26,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1128167628, now seen corresponding path program 1 times [2020-10-13 13:43:26,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:26,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638951790] [2020-10-13 13:43:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:27,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:27,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 13:43:27,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-13 13:43:27,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 13:43:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:27,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:43:28,655 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:28,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:28,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:43:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:28,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:43:28,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 13:43:28,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:43:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:43:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 13:43:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:29,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:29,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:43:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:29,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 13:43:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:43:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:43:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:29,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:43:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 13:43:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 13:43:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:29,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:43:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:43:29,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638951790] [2020-10-13 13:43:29,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:29,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:43:29,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064778796] [2020-10-13 13:43:29,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:43:29,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:43:29,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:43:29,540 INFO L87 Difference]: Start difference. First operand 772 states. Second operand 8 states. [2020-10-13 13:43:32,728 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:33,480 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:34,133 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:34,854 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:35,558 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:36,607 INFO L93 Difference]: Finished difference Result 1044 states and 1849 transitions. [2020-10-13 13:43:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:43:36,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-13 13:43:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:36,637 INFO L225 Difference]: With dead ends: 1044 [2020-10-13 13:43:36,637 INFO L226 Difference]: Without dead ends: 832 [2020-10-13 13:43:36,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:43:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-13 13:43:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 767. [2020-10-13 13:43:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-13 13:43:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1386 transitions. [2020-10-13 13:43:36,842 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1386 transitions. Word has length 187 [2020-10-13 13:43:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:36,844 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1386 transitions. [2020-10-13 13:43:36,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:43:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1386 transitions. [2020-10-13 13:43:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 13:43:36,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:36,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:43:36,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:43:36,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash 410172402, now seen corresponding path program 1 times [2020-10-13 13:43:36,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:36,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072664010] [2020-10-13 13:43:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:37,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:39,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:39,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 13:43:39,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2746 [2020-10-13 13:43:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:43:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 13:43:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:43:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:40,634 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:40,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:40,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:43:40,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:43:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-13 13:43:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 13:43:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:43:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:41,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:43:41,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:43:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 13:43:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 13:43:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:41,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:43:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:43:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:41,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:43:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 13:43:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:41,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:43:41,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:43:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:43:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 13:43:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:41,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:41,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 13:43:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:41,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:43:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:43:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:43:42,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072664010] [2020-10-13 13:43:42,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:42,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:43:42,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320425765] [2020-10-13 13:43:42,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:43:42,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:42,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:43:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:43:42,074 INFO L87 Difference]: Start difference. First operand 767 states and 1386 transitions. Second operand 14 states. [2020-10-13 13:43:51,146 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:43:52,026 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:43:52,989 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-13 13:43:53,881 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 13:43:55,193 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:56,079 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:56,961 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:57,845 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:58,682 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:59,722 INFO L93 Difference]: Finished difference Result 1042 states and 1841 transitions. [2020-10-13 13:43:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:43:59,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-13 13:43:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:59,731 INFO L225 Difference]: With dead ends: 1042 [2020-10-13 13:43:59,731 INFO L226 Difference]: Without dead ends: 832 [2020-10-13 13:43:59,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:43:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-13 13:43:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 767. [2020-10-13 13:43:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-13 13:43:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1321 transitions. [2020-10-13 13:43:59,881 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1321 transitions. Word has length 187 [2020-10-13 13:43:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:59,882 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1321 transitions. [2020-10-13 13:43:59,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:43:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1321 transitions. [2020-10-13 13:43:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 13:43:59,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:59,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:43:59,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:43:59,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:59,888 INFO L82 PathProgramCache]: Analyzing trace with hash 534018384, now seen corresponding path program 1 times [2020-10-13 13:43:59,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:59,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314122269] [2020-10-13 13:43:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:44:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 13:44:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:44:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 13:44:05,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 13:44:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 13:44:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:06,067 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:44:06,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:44:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:44:06,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:44:06,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:44:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:06,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:44:06,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-13 13:44:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 13:44:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:44:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:44:06,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:06,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:44:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:44:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:06,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:06,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:44:06,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-13 13:44:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:06,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:06,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:44:06,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:44:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:07,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-13 13:44:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:07,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:44:07,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:44:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-13 13:44:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:07,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:07,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:07,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:44:07,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:44:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-13 13:44:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:07,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:07,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:07,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:44:07,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:44:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-13 13:44:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:07,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:44:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:44:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:44:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:44:07,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314122269] [2020-10-13 13:44:07,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:44:07,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:44:07,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258329897] [2020-10-13 13:44:07,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:44:07,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:44:07,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:44:07,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:44:07,298 INFO L87 Difference]: Start difference. First operand 767 states and 1321 transitions. Second operand 11 states. [2020-10-13 13:44:08,096 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-13 13:44:15,198 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:15,771 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:16,345 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:16,622 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:17,515 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:17,828 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:18,834 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:19,274 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:20,287 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:20,597 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:22,480 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-13 13:44:23,147 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:44:23,527 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:44:23,577 INFO L93 Difference]: Finished difference Result 1302 states and 2209 transitions. [2020-10-13 13:44:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:44:23,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-10-13 13:44:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:44:23,587 INFO L225 Difference]: With dead ends: 1302 [2020-10-13 13:44:23,587 INFO L226 Difference]: Without dead ends: 1098 [2020-10-13 13:44:23,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:44:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-13 13:44:23,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 960. [2020-10-13 13:44:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-10-13 13:44:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1633 transitions. [2020-10-13 13:44:23,738 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1633 transitions. Word has length 251 [2020-10-13 13:44:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:44:23,739 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1633 transitions. [2020-10-13 13:44:23,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:44:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1633 transitions. [2020-10-13 13:44:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-13 13:44:23,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:44:23,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:44:23,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:44:23,747 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:44:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:44:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash 255643192, now seen corresponding path program 1 times [2020-10-13 13:44:23,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:44:23,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521825525] [2020-10-13 13:44:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:44:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:28,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 13:44:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:44:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 13:44:28,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:44:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 13:44:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 13:44:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:30,021 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:44:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:44:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:30,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:30,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:44:30,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:44:30,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:44:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:30,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:30,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:44:30,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-13 13:44:30,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:44:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 13:44:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:44:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:30,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:30,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:44:30,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:44:30,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:44:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:31,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:44:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:31,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:44:31,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:44:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:31,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:44:31,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-13 13:44:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:31,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:44:31,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:31,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 13:44:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:31,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:44:31,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:31,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 13:44:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:31,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:44:31,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:31,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:31,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-13 13:44:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:44:31,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:44:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:44:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:44:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:44:32,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521825525] [2020-10-13 13:44:32,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:44:32,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 13:44:32,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622903747] [2020-10-13 13:44:32,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:44:32,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:44:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:44:32,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:44:32,082 INFO L87 Difference]: Start difference. First operand 960 states and 1633 transitions. Second operand 19 states. [2020-10-13 13:44:32,969 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:44:40,609 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:41,429 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:44:42,265 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-13 13:44:43,138 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:44:43,660 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:44,176 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:44,687 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:44,993 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:45,828 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:46,094 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:46,490 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:46,768 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:47,642 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:48,082 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:48,380 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:48,822 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:49,123 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:44:50,197 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:50,506 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:44:50,844 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-13 13:44:51,292 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:51,593 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:44:52,056 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:52,319 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:53,574 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:53,830 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:54,113 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:54,377 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:44:54,680 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:44:55,157 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:55,656 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:56,699 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:44:57,709 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:58,023 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:58,380 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:44:59,268 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:45:00,114 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:45:00,946 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-10-13 13:45:01,772 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-13 13:45:03,338 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:03,817 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:04,646 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:04,958 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:05,279 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:05,602 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:45:06,000 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:06,307 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:06,623 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:06,941 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:07,489 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:09,143 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:09,670 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:09,945 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:10,234 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:10,527 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:11,031 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:11,332 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:11,641 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:11,962 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:12,347 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:14,519 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:14,875 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:15,200 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:45:15,570 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:15,932 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:16,436 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:16,755 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:17,086 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:17,396 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-13 13:45:19,483 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 13:45:19,874 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 13:45:20,210 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:20,567 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-13 13:45:20,983 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:21,587 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-13 13:45:21,939 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:22,238 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:24,261 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:24,597 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:24,952 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:25,274 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:25,578 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:45:26,183 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:45:34,407 INFO L93 Difference]: Finished difference Result 6514 states and 11045 transitions. [2020-10-13 13:45:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-10-13 13:45:34,408 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 255 [2020-10-13 13:45:34,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:45:34,451 INFO L225 Difference]: With dead ends: 6514 [2020-10-13 13:45:34,451 INFO L226 Difference]: Without dead ends: 6117 [2020-10-13 13:45:34,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5895 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=3145, Invalid=12605, Unknown=0, NotChecked=0, Total=15750 [2020-10-13 13:45:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2020-10-13 13:45:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 4493. [2020-10-13 13:45:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4493 states. [2020-10-13 13:45:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 7435 transitions. [2020-10-13 13:45:35,005 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 7435 transitions. Word has length 255 [2020-10-13 13:45:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:45:35,006 INFO L479 AbstractCegarLoop]: Abstraction has 4493 states and 7435 transitions. [2020-10-13 13:45:35,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:45:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 7435 transitions. [2020-10-13 13:45:35,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 13:45:35,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:45:35,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:45:35,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:45:35,015 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:45:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:45:35,015 INFO L82 PathProgramCache]: Analyzing trace with hash 868839203, now seen corresponding path program 1 times [2020-10-13 13:45:35,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:45:35,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327463486] [2020-10-13 13:45:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:45:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:40,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-13 13:45:40,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:45:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-13 13:45:40,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:45:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 13:45:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 13:45:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,139 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:45:41,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:45:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:45:41,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:45:41,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:45:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:45:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:45:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:45:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:45:41,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 13:45:41,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:45:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:45:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 13:45:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:45:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:45:41,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:45:41,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:45:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:45:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:45:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:45:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:45:41,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:45:41,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:45:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:45:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:45:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:45:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:45:41,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:45:41,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:45:41,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:45:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:45:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-13 13:45:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:45:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:45:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 13:45:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:45:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:45:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:45:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:45:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:45:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 13:45:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:45:41,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:45:41,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:45:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:45:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:45:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-13 13:45:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:45:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:45:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:45:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:45:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:45:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:45:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:45:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:45:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:45:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:45:41,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327463486] [2020-10-13 13:45:41,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:45:41,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:45:41,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053489755] [2020-10-13 13:45:41,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:45:41,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:45:41,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:45:41,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:45:41,986 INFO L87 Difference]: Start difference. First operand 4493 states and 7435 transitions. Second operand 11 states. [2020-10-13 13:45:42,865 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-13 13:45:50,000 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:50,832 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:51,403 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:52,003 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:52,267 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:53,300 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:53,610 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:54,643 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:54,946 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:56,822 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:57,959 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-13 13:45:58,247 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:45:58,653 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:45:58,871 INFO L93 Difference]: Finished difference Result 13805 states and 22786 transitions. [2020-10-13 13:45:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:45:58,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-13 13:45:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:45:58,916 INFO L225 Difference]: With dead ends: 13805 [2020-10-13 13:45:58,916 INFO L226 Difference]: Without dead ends: 9875 [2020-10-13 13:45:58,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:45:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9875 states. [2020-10-13 13:45:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9875 to 7465. [2020-10-13 13:45:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7465 states. [2020-10-13 13:45:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7465 states to 7465 states and 12273 transitions. [2020-10-13 13:45:59,526 INFO L78 Accepts]: Start accepts. Automaton has 7465 states and 12273 transitions. Word has length 256 [2020-10-13 13:45:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:45:59,527 INFO L479 AbstractCegarLoop]: Abstraction has 7465 states and 12273 transitions. [2020-10-13 13:45:59,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:45:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7465 states and 12273 transitions. [2020-10-13 13:45:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 13:45:59,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:45:59,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:45:59,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:45:59,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:45:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:45:59,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2077698485, now seen corresponding path program 1 times [2020-10-13 13:45:59,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:45:59,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848245823] [2020-10-13 13:45:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:45:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:46:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 13:46:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 13:46:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,476 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:46:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:46:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:46:05,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:46:05,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:46:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:46:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 13:46:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:46:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 13:46:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:46:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:46:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:46:05,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:46:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:46:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:05,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:46:05,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:46:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:46:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:46:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:46:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:46:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:46:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 13:46:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:06,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:06,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:46:06,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:46:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 13:46:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:06,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:06,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:06,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:46:06,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:46:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:06,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-13 13:46:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:46:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:06,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 13:46:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:06,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:46:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:46:06,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848245823] [2020-10-13 13:46:06,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:46:06,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:46:06,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100641152] [2020-10-13 13:46:06,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:46:06,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:46:06,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:46:06,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:46:06,390 INFO L87 Difference]: Start difference. First operand 7465 states and 12273 transitions. Second operand 12 states. [2020-10-13 13:46:07,190 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:46:15,062 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:46:15,824 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 188 [2020-10-13 13:46:16,381 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:16,635 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:17,116 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:17,393 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:17,651 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:46:19,018 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:19,328 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:19,606 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:46:20,770 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:21,264 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:21,577 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:46:22,922 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:23,413 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:23,711 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:46:25,699 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:46:26,476 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:46:28,019 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-13 13:46:28,400 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-13 13:46:28,981 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2020-10-13 13:46:29,720 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 187 [2020-10-13 13:46:31,235 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:31,509 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:46:31,839 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:46:33,232 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:33,569 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:46:34,755 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:35,090 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:46:36,405 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:46:36,746 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:46:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:46:38,453 INFO L93 Difference]: Finished difference Result 26127 states and 43126 transitions. [2020-10-13 13:46:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 13:46:38,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 260 [2020-10-13 13:46:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:46:38,538 INFO L225 Difference]: With dead ends: 26127 [2020-10-13 13:46:38,538 INFO L226 Difference]: Without dead ends: 19225 [2020-10-13 13:46:38,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=426, Invalid=1554, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 13:46:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19225 states. [2020-10-13 13:46:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19225 to 14485. [2020-10-13 13:46:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14485 states. [2020-10-13 13:46:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14485 states to 14485 states and 23780 transitions. [2020-10-13 13:46:39,641 INFO L78 Accepts]: Start accepts. Automaton has 14485 states and 23780 transitions. Word has length 260 [2020-10-13 13:46:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:46:39,642 INFO L479 AbstractCegarLoop]: Abstraction has 14485 states and 23780 transitions. [2020-10-13 13:46:39,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:46:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 14485 states and 23780 transitions. [2020-10-13 13:46:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 13:46:39,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:46:39,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:46:39,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:46:39,658 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:46:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:46:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1962484952, now seen corresponding path program 1 times [2020-10-13 13:46:39,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:46:39,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094900346] [2020-10-13 13:46:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:46:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:44,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 13:46:44,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:46:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 13:46:44,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:46:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 13:46:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:46:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:45,670 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:46:45,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:46:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:45,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:46:45,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:46:45,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:46:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:46:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 13:46:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 13:46:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:46:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:46:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:46:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:46,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:46:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-13 13:46:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:46,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:46:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:46:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 13:46:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:46,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 13:46:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:46,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:46,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:46,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:46:46,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:46:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-13 13:46:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:46,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:46,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:46:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:46:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-13 13:46:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:46,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:46,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:46:46,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094900346] [2020-10-13 13:46:46,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:46:46,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:46:46,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091745355] [2020-10-13 13:46:46,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:46:46,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:46:46,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:46:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:46:46,410 INFO L87 Difference]: Start difference. First operand 14485 states and 23780 transitions. Second operand 11 states. [2020-10-13 13:46:47,297 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-13 13:46:54,664 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-13 13:46:54,914 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:55,400 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:56,207 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:56,888 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:57,760 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:46:59,094 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 13:46:59,559 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-13 13:46:59,927 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:47:00,659 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:47:01,573 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:47:02,422 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:47:04,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:47:04,213 INFO L93 Difference]: Finished difference Result 42221 states and 69705 transitions. [2020-10-13 13:47:04,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:47:04,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 261 [2020-10-13 13:47:04,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:47:04,340 INFO L225 Difference]: With dead ends: 42221 [2020-10-13 13:47:04,340 INFO L226 Difference]: Without dead ends: 31215 [2020-10-13 13:47:04,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-13 13:47:04,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31215 states.