/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:48:22,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:48:22,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:48:22,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:48:22,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:48:22,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:48:22,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:48:22,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:48:22,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:48:22,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:48:22,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:48:22,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:48:22,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:48:22,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:48:22,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:48:22,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:48:22,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:48:22,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:48:22,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:48:22,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:48:22,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:48:22,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:48:22,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:48:22,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:48:22,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:48:22,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:48:22,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:48:22,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:48:22,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:48:22,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:48:22,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:48:22,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:48:22,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:48:22,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:48:22,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:48:22,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:48:22,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:48:22,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:48:22,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:48:22,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:48:22,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:48:22,703 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 [2020-10-15 02:48:22,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:48:22,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:48:22,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:48:22,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:48:22,748 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:48:22,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:48:22,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:48:22,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:48:22,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:48:22,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:48:22,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:48:22,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:48:22,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:48:22,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:48:22,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:48:22,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:48:22,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:48:22,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:48:22,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:48:22,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:48:22,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:48:22,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:48:22,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:48:22,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:48:22,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:48:22,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:48:22,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:48:22,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:48:22,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:48:22,754 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:48:23,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:48:23,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:48:23,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:48:23,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:48:23,086 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:48:23,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-10-15 02:48:23,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6752c8ac/cc7277663e03439faab912c76f1706cf/FLAGf96e4ecd2 [2020-10-15 02:48:23,752 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:48:23,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-10-15 02:48:23,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6752c8ac/cc7277663e03439faab912c76f1706cf/FLAGf96e4ecd2 [2020-10-15 02:48:23,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6752c8ac/cc7277663e03439faab912c76f1706cf [2020-10-15 02:48:23,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:48:23,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:48:24,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:48:24,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:48:24,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:48:24,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:48:23" (1/1) ... [2020-10-15 02:48:24,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710186eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24, skipping insertion in model container [2020-10-15 02:48:24,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:48:23" (1/1) ... [2020-10-15 02:48:24,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:48:24,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:48:24,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:48:24,737 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:48:24,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:48:24,940 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:48:24,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24 WrapperNode [2020-10-15 02:48:24,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:48:24,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:48:24,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:48:24,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:48:24,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:24,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:24,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:24,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:25,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:25,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:25,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (1/1) ... [2020-10-15 02:48:25,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:48:25,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:48:25,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:48:25,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:48:25,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (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 [2020-10-15 02:48:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:48:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:48:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:48:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-15 02:48:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-15 02:48:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-15 02:48:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-15 02:48:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-15 02:48:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-15 02:48:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-15 02:48:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:48:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-15 02:48:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:48:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:48:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:48:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:48:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:48:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:48:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:48:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:48:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:48:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:48:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:48:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:48:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 02:48:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 02:48:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:48:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:48:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:48:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:48:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:48:27,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:48:27,445 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 02:48:27,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:48:27 BoogieIcfgContainer [2020-10-15 02:48:27,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:48:27,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:48:27,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:48:27,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:48:27,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:48:23" (1/3) ... [2020-10-15 02:48:27,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ae16ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:48:27, skipping insertion in model container [2020-10-15 02:48:27,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:48:24" (2/3) ... [2020-10-15 02:48:27,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ae16ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:48:27, skipping insertion in model container [2020-10-15 02:48:27,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:48:27" (3/3) ... [2020-10-15 02:48:27,477 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-10-15 02:48:27,490 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:48:27,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:48:27,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:48:27,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:48:27,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:48:27,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:48:27,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:48:27,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:48:27,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:48:27,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:48:27,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:48:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states. [2020-10-15 02:48:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 02:48:27,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:48:27,635 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] [2020-10-15 02:48:27,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:48:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:48:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1037169193, now seen corresponding path program 1 times [2020-10-15 02:48:27,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:48:27,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070607104] [2020-10-15 02:48:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:48:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:29,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 02:48:29,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-15 02:48:29,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:29,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-15 02:48:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:48:30,299 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:48:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:48:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:48:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 02:48:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:48:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 02:48:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-15 02:48:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-15 02:48:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:48:30,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:48:30,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 02:48:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:48:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-15 02:48:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 02:48:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:48:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-15 02:48:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:48:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-15 02:48:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:30,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 02:48:30,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-15 02:48:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:30,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:30,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:31,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-15 02:48:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:31,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:31,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:31,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:48:31,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:31,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-15 02:48:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:31,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:31,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:48:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:48:31,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:31,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:48:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:48:31,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070607104] [2020-10-15 02:48:31,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:48:31,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 02:48:31,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398579938] [2020-10-15 02:48:31,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:48:31,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:48:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:48:31,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:48:31,165 INFO L87 Difference]: Start difference. First operand 782 states. Second operand 8 states. [2020-10-15 02:48:34,142 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:34,847 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:35,551 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:36,316 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:36,997 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:48:38,056 INFO L93 Difference]: Finished difference Result 1069 states and 1884 transitions. [2020-10-15 02:48:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:48:38,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-15 02:48:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:48:38,087 INFO L225 Difference]: With dead ends: 1069 [2020-10-15 02:48:38,087 INFO L226 Difference]: Without dead ends: 847 [2020-10-15 02:48:38,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:48:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-15 02:48:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 777. [2020-10-15 02:48:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-10-15 02:48:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1401 transitions. [2020-10-15 02:48:38,283 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1401 transitions. Word has length 187 [2020-10-15 02:48:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:48:38,285 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 1401 transitions. [2020-10-15 02:48:38,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:48:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1401 transitions. [2020-10-15 02:48:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 02:48:38,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:48:38,289 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] [2020-10-15 02:48:38,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:48:38,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:48:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:48:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1719458073, now seen corresponding path program 1 times [2020-10-15 02:48:38,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:48:38,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087400850] [2020-10-15 02:48:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:48:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:41,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:41,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 02:48:41,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3088 [2020-10-15 02:48:41,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:41,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:48:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-15 02:48:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:48:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:42,314 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:48:42,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:48:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:42,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:42,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:48:42,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 02:48:42,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:42,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:48:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 02:48:43,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-15 02:48:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:48:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:48:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-15 02:48:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:48:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-15 02:48:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:48:43,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:48:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:48:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:48:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:48:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-15 02:48:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:43,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-15 02:48:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:43,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-15 02:48:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:43,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:48:43,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:43,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:43,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-15 02:48:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:43,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:48:43,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-15 02:48:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:48:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:48:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:48:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-15 02:48:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:48:43,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:48:43,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:48:43,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:48:43,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:48:43,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:48:43,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:48:43,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:48:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:48:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:48:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:48:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:48:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:48:43,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087400850] [2020-10-15 02:48:43,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:48:43,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 02:48:43,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214871945] [2020-10-15 02:48:43,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:48:43,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:48:43,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:48:43,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:48:43,746 INFO L87 Difference]: Start difference. First operand 777 states and 1401 transitions. Second operand 14 states. [2020-10-15 02:48:51,947 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 02:48:52,650 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-15 02:48:53,465 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-15 02:48:54,163 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:48:55,390 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:56,161 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:57,090 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:58,039 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:48:58,912 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:49:00,036 INFO L93 Difference]: Finished difference Result 1067 states and 1876 transitions. [2020-10-15 02:49:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:49:00,036 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-15 02:49:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:49:00,045 INFO L225 Difference]: With dead ends: 1067 [2020-10-15 02:49:00,046 INFO L226 Difference]: Without dead ends: 847 [2020-10-15 02:49:00,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:49:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-15 02:49:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 777. [2020-10-15 02:49:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-10-15 02:49:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1336 transitions. [2020-10-15 02:49:00,199 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1336 transitions. Word has length 187 [2020-10-15 02:49:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:49:00,200 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 1336 transitions. [2020-10-15 02:49:00,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:49:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1336 transitions. [2020-10-15 02:49:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 02:49:00,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:49:00,205 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] [2020-10-15 02:49:00,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:49:00,206 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:49:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:49:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1054520389, now seen corresponding path program 1 times [2020-10-15 02:49:00,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:49:00,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224616726] [2020-10-15 02:49:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:49:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-15 02:49:05,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:49:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-15 02:49:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:05,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:49:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-15 02:49:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:49:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:06,367 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:49:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:49:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:06,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:49:06,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 02:49:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:06,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:49:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:49:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-15 02:49:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:06,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-15 02:49:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:49:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:49:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:49:07,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:49:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:49:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:07,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:49:07,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:49:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:49:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:49:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:49:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:49:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-15 02:49:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:07,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-15 02:49:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:07,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:49:07,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-15 02:49:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:07,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:49:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-15 02:49:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:07,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:07,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:49:07,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:49:07,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:07,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:49:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:49:07,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224616726] [2020-10-15 02:49:07,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:49:07,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:49:07,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750462102] [2020-10-15 02:49:07,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:49:07,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:49:07,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:49:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:49:07,552 INFO L87 Difference]: Start difference. First operand 777 states and 1336 transitions. Second operand 11 states. [2020-10-15 02:49:08,263 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:49:14,535 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:15,222 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:15,674 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:16,324 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:16,723 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:17,431 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:18,080 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:18,670 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 02:49:19,261 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:20,602 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:49:21,554 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2020-10-15 02:49:21,805 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-15 02:49:22,075 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-15 02:49:22,505 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 02:49:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:49:22,678 INFO L93 Difference]: Finished difference Result 1351 states and 2280 transitions. [2020-10-15 02:49:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:49:22,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-10-15 02:49:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:49:22,691 INFO L225 Difference]: With dead ends: 1351 [2020-10-15 02:49:22,691 INFO L226 Difference]: Without dead ends: 1137 [2020-10-15 02:49:22,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:49:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-10-15 02:49:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 991. [2020-10-15 02:49:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-15 02:49:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1689 transitions. [2020-10-15 02:49:22,851 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1689 transitions. Word has length 251 [2020-10-15 02:49:22,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:49:22,852 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1689 transitions. [2020-10-15 02:49:22,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:49:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1689 transitions. [2020-10-15 02:49:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-15 02:49:22,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:49:22,860 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] [2020-10-15 02:49:22,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:49:22,860 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:49:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:49:22,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1915477859, now seen corresponding path program 1 times [2020-10-15 02:49:22,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:49:22,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796866651] [2020-10-15 02:49:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:49:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:26,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-15 02:49:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:49:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-15 02:49:28,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:28,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:49:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:49:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-15 02:49:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:29,042 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:49:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:49:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:29,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:29,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:49:29,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:29,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 02:49:29,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:29,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:49:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:29,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:49:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-15 02:49:29,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:29,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:49:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:49:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:49:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:49:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:49:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:49:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:49:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:30,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:49:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:49:30,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:49:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:49:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:49:30,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:49:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:49:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:49:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-15 02:49:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:30,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:30,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-15 02:49:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-15 02:49:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:49:30,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:49:30,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:49:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:49:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-15 02:49:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:30,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:30,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:49:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:49:30,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:30,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:49:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:30,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:49:30,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796866651] [2020-10-15 02:49:30,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:49:30,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:49:30,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660634530] [2020-10-15 02:49:30,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:49:30,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:49:30,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:49:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:49:30,511 INFO L87 Difference]: Start difference. First operand 991 states and 1689 transitions. Second operand 11 states. [2020-10-15 02:49:31,193 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:49:31,840 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-15 02:49:32,750 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:49:33,405 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-15 02:49:44,613 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:49:45,014 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:45,321 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:49:46,445 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:46,891 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:49:48,098 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:48,340 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:49:49,471 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:49,770 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:49:50,969 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:49:51,286 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:49:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:49:52,895 INFO L93 Difference]: Finished difference Result 3175 states and 5405 transitions. [2020-10-15 02:49:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:49:52,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 255 [2020-10-15 02:49:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:49:52,909 INFO L225 Difference]: With dead ends: 3175 [2020-10-15 02:49:52,909 INFO L226 Difference]: Without dead ends: 2228 [2020-10-15 02:49:52,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:49:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2020-10-15 02:49:53,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1956. [2020-10-15 02:49:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-10-15 02:49:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 3305 transitions. [2020-10-15 02:49:53,174 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 3305 transitions. Word has length 255 [2020-10-15 02:49:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:49:53,175 INFO L479 AbstractCegarLoop]: Abstraction has 1956 states and 3305 transitions. [2020-10-15 02:49:53,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:49:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 3305 transitions. [2020-10-15 02:49:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-15 02:49:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:49:53,182 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] [2020-10-15 02:49:53,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:49:53,183 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:49:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:49:53,183 INFO L82 PathProgramCache]: Analyzing trace with hash -701146557, now seen corresponding path program 1 times [2020-10-15 02:49:53,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:49:53,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133906665] [2020-10-15 02:49:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:49:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:53,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:49:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:49:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-15 02:49:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:59,387 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:49:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:49:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:59,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:59,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:49:59,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 02:49:59,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:59,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:49:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:49:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:49:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:49:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:49:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:49:59,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:49:59,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:49:59,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:49:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-15 02:49:59,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:49:59,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:49:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:49:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:49:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 02:49:59,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:50:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:50:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:50:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:50:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:00,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:50:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:00,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:50:00,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:50:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:50:00,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:50:00,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 02:50:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-15 02:50:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:50:00,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-15 02:50:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:50:00,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-15 02:50:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:00,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:50:00,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:00,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:00,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-15 02:50:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:00,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:00,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:50:00,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:50:00,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:00,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:50:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:50:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:50:00,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133906665] [2020-10-15 02:50:00,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:50:00,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:50:00,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466493719] [2020-10-15 02:50:00,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:50:00,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:50:00,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:50:00,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:50:00,569 INFO L87 Difference]: Start difference. First operand 1956 states and 3305 transitions. Second operand 11 states. [2020-10-15 02:50:01,248 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:50:02,022 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2020-10-15 02:50:02,860 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 02:50:04,177 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 382 DAG size of output: 378 [2020-10-15 02:50:21,885 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:50:22,376 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:22,776 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:23,571 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:24,101 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:24,810 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:25,672 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:26,557 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:26,928 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:27,454 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:28,236 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:28,719 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:29,292 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:29,993 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:50:30,437 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:50:30,952 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:50:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:50:32,403 INFO L93 Difference]: Finished difference Result 8023 states and 13562 transitions. [2020-10-15 02:50:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:50:32,404 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-15 02:50:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:50:32,434 INFO L225 Difference]: With dead ends: 8023 [2020-10-15 02:50:32,435 INFO L226 Difference]: Without dead ends: 6135 [2020-10-15 02:50:32,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:50:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2020-10-15 02:50:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 5459. [2020-10-15 02:50:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5459 states. [2020-10-15 02:50:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 9200 transitions. [2020-10-15 02:50:33,229 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 9200 transitions. Word has length 256 [2020-10-15 02:50:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:50:33,230 INFO L479 AbstractCegarLoop]: Abstraction has 5459 states and 9200 transitions. [2020-10-15 02:50:33,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:50:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 9200 transitions. [2020-10-15 02:50:33,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-15 02:50:33,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:50:33,245 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] [2020-10-15 02:50:33,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:50:33,246 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:50:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:50:33,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1439309816, now seen corresponding path program 1 times [2020-10-15 02:50:33,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:50:33,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827671432] [2020-10-15 02:50:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:50:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:38,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-15 02:50:38,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:50:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:50:38,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:38,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:50:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:50:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-15 02:50:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,075 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:50:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:50:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:50:39,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:50:39,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:50:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:50:39,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-15 02:50:39,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:50:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:50:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:50:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:50:39,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:50:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:50:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:50:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:50:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:50:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:50:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:50:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:50:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:50:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-15 02:50:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:39,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:50:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-15 02:50:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:39,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-15 02:50:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:50:39,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:50:39,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:50:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-15 02:50:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:50:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:50:39,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:50:39,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:50:39,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:50:39,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:50:39,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:50:39,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:50:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:50:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:50:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:50:39,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:50:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:50:39,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827671432] [2020-10-15 02:50:39,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:50:39,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:50:39,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672313238] [2020-10-15 02:50:39,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:50:39,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:50:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:50:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:50:39,967 INFO L87 Difference]: Start difference. First operand 5459 states and 9200 transitions. Second operand 11 states. [2020-10-15 02:50:40,700 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:50:41,493 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-15 02:50:42,542 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 02:50:44,870 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 383 DAG size of output: 381 [2020-10-15 02:51:02,324 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:51:02,862 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:03,259 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:03,763 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:04,614 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:05,224 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:06,093 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:07,080 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:07,434 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:07,854 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:08,865 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:09,418 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:09,882 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:10,915 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:11,434 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:11,919 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:51:14,130 INFO L93 Difference]: Finished difference Result 21795 states and 36710 transitions. [2020-10-15 02:51:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:51:14,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-15 02:51:14,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:51:14,204 INFO L225 Difference]: With dead ends: 21795 [2020-10-15 02:51:14,204 INFO L226 Difference]: Without dead ends: 16684 [2020-10-15 02:51:14,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:51:14,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16684 states. [2020-10-15 02:51:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16684 to 14958. [2020-10-15 02:51:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14958 states. [2020-10-15 02:51:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14958 states to 14958 states and 25091 transitions. [2020-10-15 02:51:16,361 INFO L78 Accepts]: Start accepts. Automaton has 14958 states and 25091 transitions. Word has length 257 [2020-10-15 02:51:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:51:16,362 INFO L479 AbstractCegarLoop]: Abstraction has 14958 states and 25091 transitions. [2020-10-15 02:51:16,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:51:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 14958 states and 25091 transitions. [2020-10-15 02:51:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-15 02:51:16,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:51:16,401 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] [2020-10-15 02:51:16,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:51:16,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:51:16,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:51:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -871063362, now seen corresponding path program 1 times [2020-10-15 02:51:16,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:51:16,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404683322] [2020-10-15 02:51:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:51:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:16,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-15 02:51:21,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:51:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-15 02:51:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:21,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:51:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:51:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-15 02:51:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:51:22,283 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-15 02:51:22,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:51:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:22,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:22,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:51:22,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:51:22,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:22,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:22,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:51:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:51:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-15 02:51:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:22,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:51:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:51:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:51:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:22,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:51:22,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:51:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 02:51:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:22,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:51:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:22,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:51:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:51:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-15 02:51:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:22,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:51:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:51:22,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:22,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:51:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:51:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:51:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:51:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-15 02:51:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-15 02:51:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-15 02:51:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:23,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:23,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 02:51:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:51:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:23,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-15 02:51:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-15 02:51:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:51:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:51:23,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:51:23,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:51:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:51:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:51:23,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:51:23,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:51:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:51:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 02:51:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:51:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:51:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:51:23,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404683322] [2020-10-15 02:51:23,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:51:23,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:51:23,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499505345] [2020-10-15 02:51:23,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:51:23,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:51:23,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:51:23,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:51:23,234 INFO L87 Difference]: Start difference. First operand 14958 states and 25091 transitions. Second operand 11 states. [2020-10-15 02:51:23,995 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-15 02:51:24,752 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2020-10-15 02:51:25,869 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 02:51:27,320 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 382 DAG size of output: 378 [2020-10-15 02:51:50,421 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-15 02:51:50,987 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:51,414 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:52,285 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:52,767 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:53,393 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:54,475 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:55,609 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:56,248 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:56,506 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:57,543 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:51:58,275 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:51:58,574 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:51:59,673 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:52:00,409 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 02:52:00,705 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 02:52:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:52:03,247 INFO L93 Difference]: Finished difference Result 62654 states and 105162 transitions. [2020-10-15 02:52:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:52:03,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2020-10-15 02:52:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:52:03,385 INFO L225 Difference]: With dead ends: 62654 [2020-10-15 02:52:03,386 INFO L226 Difference]: Without dead ends: 47924 [2020-10-15 02:52:03,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:52:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47924 states. [2020-10-15 02:52:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47924 to 43192. [2020-10-15 02:52:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43192 states. [2020-10-15 02:52:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43192 states to 43192 states and 72149 transitions. [2020-10-15 02:52:09,076 INFO L78 Accepts]: Start accepts. Automaton has 43192 states and 72149 transitions. Word has length 258 [2020-10-15 02:52:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:52:09,076 INFO L479 AbstractCegarLoop]: Abstraction has 43192 states and 72149 transitions. [2020-10-15 02:52:09,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:52:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 43192 states and 72149 transitions. [2020-10-15 02:52:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-15 02:52:09,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:52:09,159 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] [2020-10-15 02:52:09,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:52:09,159 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:52:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:52:09,159 INFO L82 PathProgramCache]: Analyzing trace with hash 602489546, now seen corresponding path program 1 times [2020-10-15 02:52:09,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:52:09,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994497149] [2020-10-15 02:52:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:52:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:52:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:52:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:52:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:52:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking...