/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-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:56:06,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:56:06,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:56:06,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:56:06,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:56:06,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:56:06,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:56:06,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:56:06,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:56:06,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:56:06,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:56:06,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:56:06,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:56:06,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:56:06,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:56:06,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:56:06,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:56:06,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:56:06,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:56:06,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:56:06,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:56:06,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:56:06,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:56:06,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:56:06,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:56:06,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:56:06,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:56:06,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:56:06,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:56:06,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:56:06,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:56:06,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:56:06,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:56:06,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:56:06,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:56:06,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:56:06,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:56:06,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:56:06,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:56:06,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:56:06,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:56:06,715 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 02:56:06,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:56:06,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:56:06,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:56:06,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:56:06,755 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:56:06,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:56:06,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:56:06,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:56:06,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:56:06,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:56:06,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:56:06,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:56:06,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:56:06,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:56:06,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:56:06,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:56:06,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:56:06,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:56:06,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:56:06,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:56:06,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:56:06,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:56:06,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:56:06,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:56:06,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:56:06,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:56:06,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:56:06,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:56:06,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:56:06,762 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 02:56:07,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:56:07,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:56:07,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:56:07,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:56:07,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:56:07,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 02:56:07,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/353e854c4/9a0e50f6b5d74880876cc124af629056/FLAGb9ce8b783 [2020-10-15 02:56:07,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:56:07,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 02:56:07,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/353e854c4/9a0e50f6b5d74880876cc124af629056/FLAGb9ce8b783 [2020-10-15 02:56:07,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/353e854c4/9a0e50f6b5d74880876cc124af629056 [2020-10-15 02:56:07,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:56:07,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:56:07,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:07,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:56:07,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:56:07,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:07" (1/1) ... [2020-10-15 02:56:07,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74dd964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:07, skipping insertion in model container [2020-10-15 02:56:07,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:07" (1/1) ... [2020-10-15 02:56:08,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:56:08,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:56:08,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:08,485 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:56:08,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:08,688 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:56:08,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08 WrapperNode [2020-10-15 02:56:08,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:08,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:56:08,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:56:08,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:56:08,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2020-10-15 02:56:08,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:56:08,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:56:08,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:56:08,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:56:08,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (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 02:56:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:56:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:56:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:56:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:56:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:56:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:56:08,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:56:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:56:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:56:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:56:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:56:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:56:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:56:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:56:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:56:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:56:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:56:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:56:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:56:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:56:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:56:09,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:56:09,625 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:56:09,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:09 BoogieIcfgContainer [2020-10-15 02:56:09,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:56:09,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:56:09,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:56:09,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:56:09,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:07" (1/3) ... [2020-10-15 02:56:09,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243fbb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:09, skipping insertion in model container [2020-10-15 02:56:09,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (2/3) ... [2020-10-15 02:56:09,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243fbb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:09, skipping insertion in model container [2020-10-15 02:56:09,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:09" (3/3) ... [2020-10-15 02:56:09,640 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 02:56:09,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:56:09,661 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:56:09,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:56:09,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:56:09,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:56:09,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:56:09,704 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:56:09,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:56:09,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:56:09,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:56:09,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:56:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-10-15 02:56:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 02:56:09,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:09,742 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] [2020-10-15 02:56:09,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1611542725, now seen corresponding path program 1 times [2020-10-15 02:56:09,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:09,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420753409] [2020-10-15 02:56:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:12,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:56:12,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:56:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2098 [2020-10-15 02:56:12,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:12,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 02:56:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:56:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:56:12,488 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:12,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:12,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:12,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:56:12,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:12,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:12,532 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 02:56:12,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420753409] [2020-10-15 02:56:12,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:12,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:56:12,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68485874] [2020-10-15 02:56:12,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:56:12,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:12,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:56:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:56:12,561 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 4 states. [2020-10-15 02:56:12,801 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 02:56:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:13,669 INFO L93 Difference]: Finished difference Result 312 states and 523 transitions. [2020-10-15 02:56:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:13,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-15 02:56:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:13,690 INFO L225 Difference]: With dead ends: 312 [2020-10-15 02:56:13,690 INFO L226 Difference]: Without dead ends: 217 [2020-10-15 02:56:13,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-15 02:56:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2020-10-15 02:56:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-15 02:56:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 339 transitions. [2020-10-15 02:56:13,772 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 339 transitions. Word has length 60 [2020-10-15 02:56:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:13,773 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 339 transitions. [2020-10-15 02:56:13,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:56:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 339 transitions. [2020-10-15 02:56:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 02:56:13,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:13,776 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] [2020-10-15 02:56:13,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:56:13,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash -536473390, now seen corresponding path program 1 times [2020-10-15 02:56:13,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:13,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900654471] [2020-10-15 02:56:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:17,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:56:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:56:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3952 [2020-10-15 02:56:17,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:17,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:56:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:18,034 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:18,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:18,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:18,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:56:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:18,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:18,084 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 02:56:18,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900654471] [2020-10-15 02:56:18,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:18,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:18,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397938448] [2020-10-15 02:56:18,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:18,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:18,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:18,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:18,088 INFO L87 Difference]: Start difference. First operand 214 states and 339 transitions. Second operand 5 states. [2020-10-15 02:56:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:19,098 INFO L93 Difference]: Finished difference Result 556 states and 897 transitions. [2020-10-15 02:56:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:19,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 02:56:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:19,104 INFO L225 Difference]: With dead ends: 556 [2020-10-15 02:56:19,104 INFO L226 Difference]: Without dead ends: 400 [2020-10-15 02:56:19,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-15 02:56:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2020-10-15 02:56:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-15 02:56:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 629 transitions. [2020-10-15 02:56:19,152 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 629 transitions. Word has length 62 [2020-10-15 02:56:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:19,153 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 629 transitions. [2020-10-15 02:56:19,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 629 transitions. [2020-10-15 02:56:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 02:56:19,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:19,157 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] [2020-10-15 02:56:19,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:56:19,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1637017696, now seen corresponding path program 1 times [2020-10-15 02:56:19,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:19,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538778127] [2020-10-15 02:56:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 02:56:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3385 [2020-10-15 02:56:22,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:22,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 02:56:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:22,819 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:22,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:56:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:22,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 29 [2020-10-15 02:56:22,889 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 02:56:22,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538778127] [2020-10-15 02:56:22,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:22,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:22,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945576966] [2020-10-15 02:56:22,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:22,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:22,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:22,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:22,896 INFO L87 Difference]: Start difference. First operand 398 states and 629 transitions. Second operand 5 states. [2020-10-15 02:56:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:23,756 INFO L93 Difference]: Finished difference Result 1127 states and 1779 transitions. [2020-10-15 02:56:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:23,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 02:56:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:23,765 INFO L225 Difference]: With dead ends: 1127 [2020-10-15 02:56:23,766 INFO L226 Difference]: Without dead ends: 762 [2020-10-15 02:56:23,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-10-15 02:56:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 760. [2020-10-15 02:56:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-10-15 02:56:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1191 transitions. [2020-10-15 02:56:23,856 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1191 transitions. Word has length 63 [2020-10-15 02:56:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:23,856 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 1191 transitions. [2020-10-15 02:56:23,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1191 transitions. [2020-10-15 02:56:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 02:56:23,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:23,868 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] [2020-10-15 02:56:23,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:56:23,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:23,869 INFO L82 PathProgramCache]: Analyzing trace with hash -112464749, now seen corresponding path program 1 times [2020-10-15 02:56:23,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:23,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225481246] [2020-10-15 02:56:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:28,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:28,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:56:28,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:56:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4481 [2020-10-15 02:56:28,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:28,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 02:56:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:56:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 02:56:28,628 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:56:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:28,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:28,667 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 02:56:28,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225481246] [2020-10-15 02:56:28,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:28,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:56:28,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708840342] [2020-10-15 02:56:28,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:56:28,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:56:28,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:56:28,670 INFO L87 Difference]: Start difference. First operand 760 states and 1191 transitions. Second operand 4 states. [2020-10-15 02:56:28,855 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 02:56:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:29,530 INFO L93 Difference]: Finished difference Result 1848 states and 3005 transitions. [2020-10-15 02:56:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:29,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-15 02:56:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:29,540 INFO L225 Difference]: With dead ends: 1848 [2020-10-15 02:56:29,541 INFO L226 Difference]: Without dead ends: 1270 [2020-10-15 02:56:29,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-10-15 02:56:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1260. [2020-10-15 02:56:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2020-10-15 02:56:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1979 transitions. [2020-10-15 02:56:29,640 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1979 transitions. Word has length 64 [2020-10-15 02:56:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:29,641 INFO L479 AbstractCegarLoop]: Abstraction has 1260 states and 1979 transitions. [2020-10-15 02:56:29,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:56:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1979 transitions. [2020-10-15 02:56:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 02:56:29,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:29,645 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] [2020-10-15 02:56:29,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:56:29,645 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:29,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:29,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1977199456, now seen corresponding path program 1 times [2020-10-15 02:56:29,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:29,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109115012] [2020-10-15 02:56:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:29,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:34,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 02:56:34,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:56:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:34,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:56:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:34,920 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:34,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:34,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:56:34,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:34,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:34,973 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 02:56:34,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109115012] [2020-10-15 02:56:34,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:34,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:34,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553931312] [2020-10-15 02:56:34,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:34,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:34,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:34,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:34,979 INFO L87 Difference]: Start difference. First operand 1260 states and 1979 transitions. Second operand 5 states. [2020-10-15 02:56:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:36,505 INFO L93 Difference]: Finished difference Result 3660 states and 5751 transitions. [2020-10-15 02:56:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:36,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-15 02:56:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:36,522 INFO L225 Difference]: With dead ends: 3660 [2020-10-15 02:56:36,523 INFO L226 Difference]: Without dead ends: 2413 [2020-10-15 02:56:36,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-15 02:56:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2411. [2020-10-15 02:56:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-10-15 02:56:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3759 transitions. [2020-10-15 02:56:36,741 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3759 transitions. Word has length 66 [2020-10-15 02:56:36,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:36,742 INFO L479 AbstractCegarLoop]: Abstraction has 2411 states and 3759 transitions. [2020-10-15 02:56:36,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3759 transitions. [2020-10-15 02:56:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 02:56:36,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:36,749 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] [2020-10-15 02:56:36,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:56:36,750 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1768581077, now seen corresponding path program 1 times [2020-10-15 02:56:36,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:36,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941045609] [2020-10-15 02:56:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:41,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:56:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:56:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:41,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:56:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:42,034 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:42,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:42,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:42,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:56:42,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:42,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:42,083 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 02:56:42,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941045609] [2020-10-15 02:56:42,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:42,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:42,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55682189] [2020-10-15 02:56:42,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:42,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:42,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:42,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:42,088 INFO L87 Difference]: Start difference. First operand 2411 states and 3759 transitions. Second operand 5 states. [2020-10-15 02:56:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:43,267 INFO L93 Difference]: Finished difference Result 6994 states and 10907 transitions. [2020-10-15 02:56:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:43,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 02:56:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:43,295 INFO L225 Difference]: With dead ends: 6994 [2020-10-15 02:56:43,295 INFO L226 Difference]: Without dead ends: 4630 [2020-10-15 02:56:43,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2020-10-15 02:56:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4628. [2020-10-15 02:56:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4628 states. [2020-10-15 02:56:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 7149 transitions. [2020-10-15 02:56:43,623 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 7149 transitions. Word has length 67 [2020-10-15 02:56:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:43,623 INFO L479 AbstractCegarLoop]: Abstraction has 4628 states and 7149 transitions. [2020-10-15 02:56:43,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 7149 transitions. [2020-10-15 02:56:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:56:43,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:43,629 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] [2020-10-15 02:56:43,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:56:43,630 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:43,630 INFO L82 PathProgramCache]: Analyzing trace with hash -291701471, now seen corresponding path program 1 times [2020-10-15 02:56:43,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:43,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666495342] [2020-10-15 02:56:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:48,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:48,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:56:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:56:48,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:48,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 02:56:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:56:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:48,870 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:56:48,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:48,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:48,902 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 02:56:48,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666495342] [2020-10-15 02:56:48,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:48,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:56:48,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035271330] [2020-10-15 02:56:48,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:56:48,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:56:48,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:56:48,906 INFO L87 Difference]: Start difference. First operand 4628 states and 7149 transitions. Second operand 4 states. [2020-10-15 02:56:49,082 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 02:56:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:50,263 INFO L93 Difference]: Finished difference Result 12248 states and 19375 transitions. [2020-10-15 02:56:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:50,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 02:56:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:50,307 INFO L225 Difference]: With dead ends: 12248 [2020-10-15 02:56:50,307 INFO L226 Difference]: Without dead ends: 8246 [2020-10-15 02:56:50,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:50,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8246 states. [2020-10-15 02:56:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8246 to 8180. [2020-10-15 02:56:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8180 states. [2020-10-15 02:56:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8180 states to 8180 states and 12749 transitions. [2020-10-15 02:56:50,866 INFO L78 Accepts]: Start accepts. Automaton has 8180 states and 12749 transitions. Word has length 68 [2020-10-15 02:56:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:50,867 INFO L479 AbstractCegarLoop]: Abstraction has 8180 states and 12749 transitions. [2020-10-15 02:56:50,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:56:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 8180 states and 12749 transitions. [2020-10-15 02:56:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 02:56:50,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:50,875 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] [2020-10-15 02:56:50,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:56:50,875 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1472836404, now seen corresponding path program 1 times [2020-10-15 02:56:50,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:50,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393570375] [2020-10-15 02:56:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:55,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:55,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:56:55,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:56:55,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:55,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:56:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:56,118 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:56:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:56,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:56,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:56,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:56:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:56,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:56,157 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 02:56:56,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393570375] [2020-10-15 02:56:56,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:56,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:56,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500034801] [2020-10-15 02:56:56,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:56,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:56,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:56,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:56,165 INFO L87 Difference]: Start difference. First operand 8180 states and 12749 transitions. Second operand 5 states. [2020-10-15 02:56:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:57,682 INFO L93 Difference]: Finished difference Result 23804 states and 37101 transitions. [2020-10-15 02:56:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:57,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 02:56:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:57,758 INFO L225 Difference]: With dead ends: 23804 [2020-10-15 02:56:57,758 INFO L226 Difference]: Without dead ends: 15682 [2020-10-15 02:56:57,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15682 states. [2020-10-15 02:56:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15682 to 15680. [2020-10-15 02:56:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15680 states. [2020-10-15 02:56:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15680 states to 15680 states and 24237 transitions. [2020-10-15 02:56:58,835 INFO L78 Accepts]: Start accepts. Automaton has 15680 states and 24237 transitions. Word has length 70 [2020-10-15 02:56:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:58,835 INFO L479 AbstractCegarLoop]: Abstraction has 15680 states and 24237 transitions. [2020-10-15 02:56:58,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 15680 states and 24237 transitions. [2020-10-15 02:56:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 02:56:58,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:58,848 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] [2020-10-15 02:56:58,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:56:58,849 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash 666823583, now seen corresponding path program 1 times [2020-10-15 02:56:58,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:58,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450338315] [2020-10-15 02:56:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:03,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:57:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:04,079 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:57:04,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:04,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:04,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:04,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:04,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:57:04,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:04,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:04,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:04,112 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 02:57:04,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450338315] [2020-10-15 02:57:04,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:04,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:04,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411339091] [2020-10-15 02:57:04,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:04,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:04,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:04,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:04,115 INFO L87 Difference]: Start difference. First operand 15680 states and 24237 transitions. Second operand 5 states. [2020-10-15 02:57:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:06,179 INFO L93 Difference]: Finished difference Result 45298 states and 70212 transitions. [2020-10-15 02:57:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:06,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 02:57:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:06,271 INFO L225 Difference]: With dead ends: 45298 [2020-10-15 02:57:06,271 INFO L226 Difference]: Without dead ends: 30123 [2020-10-15 02:57:06,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30123 states. [2020-10-15 02:57:07,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30123 to 30121. [2020-10-15 02:57:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30121 states. [2020-10-15 02:57:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30121 states to 30121 states and 46161 transitions. [2020-10-15 02:57:07,866 INFO L78 Accepts]: Start accepts. Automaton has 30121 states and 46161 transitions. Word has length 71 [2020-10-15 02:57:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:07,867 INFO L479 AbstractCegarLoop]: Abstraction has 30121 states and 46161 transitions. [2020-10-15 02:57:07,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:07,867 INFO L276 IsEmpty]: Start isEmpty. Operand 30121 states and 46161 transitions. [2020-10-15 02:57:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:57:07,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:07,892 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] [2020-10-15 02:57:07,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:57:07,892 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:07,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2006782954, now seen corresponding path program 1 times [2020-10-15 02:57:07,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:07,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338961160] [2020-10-15 02:57:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:08,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:11,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:12,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:12,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:57:12,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:57:12,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:12,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:57:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:57:12,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:13,140 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:57:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:13,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:57:13,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:13,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:13,169 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 02:57:13,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338961160] [2020-10-15 02:57:13,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:13,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:13,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251290278] [2020-10-15 02:57:13,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:13,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:13,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:13,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:13,171 INFO L87 Difference]: Start difference. First operand 30121 states and 46161 transitions. Second operand 5 states. [2020-10-15 02:57:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:14,763 INFO L93 Difference]: Finished difference Result 49293 states and 75459 transitions. [2020-10-15 02:57:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:14,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 02:57:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:14,812 INFO L225 Difference]: With dead ends: 49293 [2020-10-15 02:57:14,812 INFO L226 Difference]: Without dead ends: 19543 [2020-10-15 02:57:14,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19543 states. [2020-10-15 02:57:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19543 to 19543. [2020-10-15 02:57:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19543 states. [2020-10-15 02:57:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19543 states to 19543 states and 29711 transitions. [2020-10-15 02:57:16,196 INFO L78 Accepts]: Start accepts. Automaton has 19543 states and 29711 transitions. Word has length 72 [2020-10-15 02:57:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:16,196 INFO L479 AbstractCegarLoop]: Abstraction has 19543 states and 29711 transitions. [2020-10-15 02:57:16,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 19543 states and 29711 transitions. [2020-10-15 02:57:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:57:16,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:16,208 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] [2020-10-15 02:57:16,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:57:16,208 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -745851851, now seen corresponding path program 1 times [2020-10-15 02:57:16,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:16,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183798321] [2020-10-15 02:57:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:21,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:57:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:57:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:21,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 02:57:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:57:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:21,436 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:57:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:21,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:21,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:21,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:21,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:21,458 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 02:57:21,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183798321] [2020-10-15 02:57:21,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:21,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:57:21,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401965147] [2020-10-15 02:57:21,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:21,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:21,460 INFO L87 Difference]: Start difference. First operand 19543 states and 29711 transitions. Second operand 6 states. [2020-10-15 02:57:21,667 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:26,667 INFO L93 Difference]: Finished difference Result 85667 states and 134309 transitions. [2020-10-15 02:57:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:57:26,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 02:57:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:26,811 INFO L225 Difference]: With dead ends: 85667 [2020-10-15 02:57:26,812 INFO L226 Difference]: Without dead ends: 67505 [2020-10-15 02:57:26,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:57:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67505 states. [2020-10-15 02:57:29,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67505 to 35423. [2020-10-15 02:57:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35423 states. [2020-10-15 02:57:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35423 states to 35423 states and 54291 transitions. [2020-10-15 02:57:29,292 INFO L78 Accepts]: Start accepts. Automaton has 35423 states and 54291 transitions. Word has length 72 [2020-10-15 02:57:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:29,293 INFO L479 AbstractCegarLoop]: Abstraction has 35423 states and 54291 transitions. [2020-10-15 02:57:29,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 35423 states and 54291 transitions. [2020-10-15 02:57:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 02:57:29,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:29,305 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] [2020-10-15 02:57:29,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:57:29,306 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1708181353, now seen corresponding path program 1 times [2020-10-15 02:57:29,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:29,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843194473] [2020-10-15 02:57:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:57:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:57:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:34,500 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:57:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:34,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:34,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:34,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:57:34,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:34,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:34,524 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 02:57:34,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843194473] [2020-10-15 02:57:34,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:34,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:34,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372031546] [2020-10-15 02:57:34,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:34,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:34,527 INFO L87 Difference]: Start difference. First operand 35423 states and 54291 transitions. Second operand 5 states. [2020-10-15 02:57:34,722 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 02:57:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:39,546 INFO L93 Difference]: Finished difference Result 104349 states and 162834 transitions. [2020-10-15 02:57:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:57:39,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 02:57:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:39,665 INFO L225 Difference]: With dead ends: 104349 [2020-10-15 02:57:39,666 INFO L226 Difference]: Without dead ends: 70307 [2020-10-15 02:57:39,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:57:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70307 states. [2020-10-15 02:57:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70307 to 52583. [2020-10-15 02:57:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52583 states. [2020-10-15 02:57:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52583 states to 52583 states and 81031 transitions. [2020-10-15 02:57:44,852 INFO L78 Accepts]: Start accepts. Automaton has 52583 states and 81031 transitions. Word has length 73 [2020-10-15 02:57:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:44,852 INFO L479 AbstractCegarLoop]: Abstraction has 52583 states and 81031 transitions. [2020-10-15 02:57:44,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 52583 states and 81031 transitions. [2020-10-15 02:57:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 02:57:44,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:44,868 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] [2020-10-15 02:57:44,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:57:44,868 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:44,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:44,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1052377695, now seen corresponding path program 1 times [2020-10-15 02:57:44,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:44,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470991345] [2020-10-15 02:57:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:49,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:57:49,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:57:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:57:49,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:49,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 02:57:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:57:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:50,084 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:57:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:57:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:50,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:50,110 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 02:57:50,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470991345] [2020-10-15 02:57:50,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:50,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:50,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789005908] [2020-10-15 02:57:50,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:50,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:50,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:50,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:50,112 INFO L87 Difference]: Start difference. First operand 52583 states and 81031 transitions. Second operand 5 states. [2020-10-15 02:57:50,316 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 02:57:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:55,423 INFO L93 Difference]: Finished difference Result 105749 states and 164714 transitions. [2020-10-15 02:57:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:57:55,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 02:57:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:55,519 INFO L225 Difference]: With dead ends: 105749 [2020-10-15 02:57:55,519 INFO L226 Difference]: Without dead ends: 68987 [2020-10-15 02:57:55,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:57:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68987 states. [2020-10-15 02:58:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68987 to 68703. [2020-10-15 02:58:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68703 states. [2020-10-15 02:58:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68703 states to 68703 states and 104531 transitions. [2020-10-15 02:58:01,405 INFO L78 Accepts]: Start accepts. Automaton has 68703 states and 104531 transitions. Word has length 73 [2020-10-15 02:58:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:01,405 INFO L479 AbstractCegarLoop]: Abstraction has 68703 states and 104531 transitions. [2020-10-15 02:58:01,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 68703 states and 104531 transitions. [2020-10-15 02:58:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 02:58:01,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:01,418 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] [2020-10-15 02:58:01,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:58:01,418 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1471066820, now seen corresponding path program 1 times [2020-10-15 02:58:01,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:01,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152643950] [2020-10-15 02:58:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:58:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:58:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:06,622 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:58:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:06,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:06,646 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 02:58:06,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152643950] [2020-10-15 02:58:06,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:06,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:06,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744737415] [2020-10-15 02:58:06,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:06,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:06,648 INFO L87 Difference]: Start difference. First operand 68703 states and 104531 transitions. Second operand 5 states. [2020-10-15 02:58:06,837 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 02:58:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:17,436 INFO L93 Difference]: Finished difference Result 200669 states and 307714 transitions. [2020-10-15 02:58:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:58:17,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 02:58:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:17,671 INFO L225 Difference]: With dead ends: 200669 [2020-10-15 02:58:17,671 INFO L226 Difference]: Without dead ends: 133347 [2020-10-15 02:58:17,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:58:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133347 states. [2020-10-15 02:58:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133347 to 100503. [2020-10-15 02:58:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100503 states. [2020-10-15 02:58:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100503 states to 100503 states and 152511 transitions. [2020-10-15 02:58:24,690 INFO L78 Accepts]: Start accepts. Automaton has 100503 states and 152511 transitions. Word has length 74 [2020-10-15 02:58:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:24,690 INFO L479 AbstractCegarLoop]: Abstraction has 100503 states and 152511 transitions. [2020-10-15 02:58:24,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 100503 states and 152511 transitions. [2020-10-15 02:58:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 02:58:24,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:24,705 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] [2020-10-15 02:58:24,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:58:24,705 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1209462636, now seen corresponding path program 1 times [2020-10-15 02:58:24,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:24,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097056591] [2020-10-15 02:58:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:24,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:25,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:58:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:58:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:29,940 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:58:29,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:29,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:29,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:29,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:58:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:29,978 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 02:58:29,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097056591] [2020-10-15 02:58:29,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:29,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 02:58:29,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093857948] [2020-10-15 02:58:29,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:58:29,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:29,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:58:29,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:58:29,980 INFO L87 Difference]: Start difference. First operand 100503 states and 152511 transitions. Second operand 8 states. [2020-10-15 02:58:30,174 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:58:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:58,666 INFO L93 Difference]: Finished difference Result 363841 states and 551466 transitions. [2020-10-15 02:58:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:58:58,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 02:58:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:59,217 INFO L225 Difference]: With dead ends: 363841 [2020-10-15 02:58:59,217 INFO L226 Difference]: Without dead ends: 326779 [2020-10-15 02:58:59,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:58:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326779 states. [2020-10-15 02:59:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326779 to 189747. [2020-10-15 02:59:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189747 states. [2020-10-15 02:59:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189747 states to 189747 states and 287627 transitions. [2020-10-15 02:59:17,466 INFO L78 Accepts]: Start accepts. Automaton has 189747 states and 287627 transitions. Word has length 75 [2020-10-15 02:59:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:17,466 INFO L479 AbstractCegarLoop]: Abstraction has 189747 states and 287627 transitions. [2020-10-15 02:59:17,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:59:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 189747 states and 287627 transitions. [2020-10-15 02:59:17,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 02:59:17,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:17,484 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] [2020-10-15 02:59:17,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:59:17,485 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:17,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1398366164, now seen corresponding path program 1 times [2020-10-15 02:59:17,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:17,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005341246] [2020-10-15 02:59:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:22,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:22,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 02:59:22,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:59:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:59:22,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:22,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:59:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:59:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 02:59:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:22,711 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 02:59:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:22,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:22,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:22,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:59:22,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:22,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:22,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:22,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:22,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:22,734 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 02:59:22,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005341246] [2020-10-15 02:59:22,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:22,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:59:22,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653488430] [2020-10-15 02:59:22,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:59:22,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:22,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:59:22,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:59:22,736 INFO L87 Difference]: Start difference. First operand 189747 states and 287627 transitions. Second operand 5 states. [2020-10-15 02:59:22,948 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 163