/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:01:14,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:01:14,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:01:14,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:01:14,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:01:14,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:01:14,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:01:14,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:01:14,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:01:14,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:01:14,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:01:14,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:01:14,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:01:14,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:01:14,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:01:14,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:01:14,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:01:14,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:01:14,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:01:14,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:01:14,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:01:14,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:01:14,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:01:14,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:01:14,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:01:14,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:01:14,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:01:14,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:01:14,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:01:14,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:01:14,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:01:14,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:01:14,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:01:14,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:01:14,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:01:14,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:01:14,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:01:14,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:01:14,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:01:14,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:01:14,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:01:14,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:01:14,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:01:14,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:01:14,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:01:14,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:01:14,951 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:01:14,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:01:14,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:01:14,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:01:14,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:01:14,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:01:14,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:01:14,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:01:14,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:01:14,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:01:14,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:01:14,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:01:14,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:01:14,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:01:14,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:01:14,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:01:14,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:01:14,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:01:14,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:01:14,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:01:14,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:01:14,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:01:14,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:01:14,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:01:14,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:01:14,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:01:15,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:01:15,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:01:15,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:01:15,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:01:15,269 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:01:15,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:01:15,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ecd8e79d/9ca779f557564e008d550a9628a13bd7/FLAG667209e9a [2020-10-14 09:01:15,910 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:01:15,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:01:15,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ecd8e79d/9ca779f557564e008d550a9628a13bd7/FLAG667209e9a [2020-10-14 09:01:16,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ecd8e79d/9ca779f557564e008d550a9628a13bd7 [2020-10-14 09:01:16,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:01:16,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:01:16,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:01:16,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:01:16,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:01:16,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e04f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16, skipping insertion in model container [2020-10-14 09:01:16,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:01:16,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:01:16,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:01:16,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:01:16,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:01:16,927 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:01:16,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16 WrapperNode [2020-10-14 09:01:16,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:01:16,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:01:16,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:01:16,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:01:16,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:16,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... [2020-10-14 09:01:17,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:01:17,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:01:17,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:01:17,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:01:17,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:01:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:01:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:01:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:01:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:01:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:01:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:01:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:01:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:01:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:01:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:01:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:01:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:01:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:01:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:01:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:01:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:01:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:01:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:01:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:01:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 09:01:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-14 09:01:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:01:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:01:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:01:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:01:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:01:18,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:01:18,226 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:01:18,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:18 BoogieIcfgContainer [2020-10-14 09:01:18,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:01:18,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:01:18,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:01:18,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:01:18,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:01:16" (1/3) ... [2020-10-14 09:01:18,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eeca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:18, skipping insertion in model container [2020-10-14 09:01:18,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:16" (2/3) ... [2020-10-14 09:01:18,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eeca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:18, skipping insertion in model container [2020-10-14 09:01:18,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:18" (3/3) ... [2020-10-14 09:01:18,241 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:01:18,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:01:18,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:01:18,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:01:18,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:01:18,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:01:18,300 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:01:18,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:01:18,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:01:18,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:01:18,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:01:18,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:01:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-10-14 09:01:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 09:01:18,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:18,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:18,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1347999356, now seen corresponding path program 1 times [2020-10-14 09:01:18,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:18,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108522569] [2020-10-14 09:01:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:23,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:23,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 09:01:23,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:01:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:01:23,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:23,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 09:01:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:01:24,339 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:01:24,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:24,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 09:01:24,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:24,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:24,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108522569] [2020-10-14 09:01:24,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:24,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:24,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653026195] [2020-10-14 09:01:24,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:24,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:24,512 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 6 states. [2020-10-14 09:01:24,974 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:01:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:26,692 INFO L93 Difference]: Finished difference Result 471 states and 785 transitions. [2020-10-14 09:01:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:26,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-10-14 09:01:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:26,716 INFO L225 Difference]: With dead ends: 471 [2020-10-14 09:01:26,716 INFO L226 Difference]: Without dead ends: 322 [2020-10-14 09:01:26,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:01:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-14 09:01:26,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-10-14 09:01:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-14 09:01:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 455 transitions. [2020-10-14 09:01:26,809 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 455 transitions. Word has length 128 [2020-10-14 09:01:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:26,810 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 455 transitions. [2020-10-14 09:01:26,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 455 transitions. [2020-10-14 09:01:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 09:01:26,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:26,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:26,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:01:26,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2137205403, now seen corresponding path program 1 times [2020-10-14 09:01:26,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:26,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105673660] [2020-10-14 09:01:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:30,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:31,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 09:01:31,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:01:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:01:31,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:31,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 09:01:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:32,392 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:01:32,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:32,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:32,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 09:01:32,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:32,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:32,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105673660] [2020-10-14 09:01:32,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:32,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:32,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845542503] [2020-10-14 09:01:32,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:32,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:32,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:32,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:32,535 INFO L87 Difference]: Start difference. First operand 320 states and 455 transitions. Second operand 6 states. [2020-10-14 09:01:32,977 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-14 09:01:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:34,082 INFO L93 Difference]: Finished difference Result 545 states and 808 transitions. [2020-10-14 09:01:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:34,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-10-14 09:01:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:34,090 INFO L225 Difference]: With dead ends: 545 [2020-10-14 09:01:34,091 INFO L226 Difference]: Without dead ends: 320 [2020-10-14 09:01:34,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:01:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-14 09:01:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2020-10-14 09:01:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-14 09:01:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 452 transitions. [2020-10-14 09:01:34,143 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 452 transitions. Word has length 129 [2020-10-14 09:01:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:34,144 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 452 transitions. [2020-10-14 09:01:34,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 452 transitions. [2020-10-14 09:01:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 09:01:34,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:34,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:34,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:01:34,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash -844478413, now seen corresponding path program 1 times [2020-10-14 09:01:34,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:34,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047683226] [2020-10-14 09:01:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 09:01:39,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:01:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 09:01:39,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:39,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 09:01:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:39,571 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:01:39,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 09:01:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:39,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:39,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047683226] [2020-10-14 09:01:39,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:39,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:39,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505440580] [2020-10-14 09:01:39,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:39,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:39,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:39,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:39,660 INFO L87 Difference]: Start difference. First operand 320 states and 452 transitions. Second operand 6 states. [2020-10-14 09:01:39,932 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:01:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:41,001 INFO L93 Difference]: Finished difference Result 741 states and 1109 transitions. [2020-10-14 09:01:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:41,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-14 09:01:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:41,006 INFO L225 Difference]: With dead ends: 741 [2020-10-14 09:01:41,006 INFO L226 Difference]: Without dead ends: 508 [2020-10-14 09:01:41,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:01:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-14 09:01:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 506. [2020-10-14 09:01:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-14 09:01:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 745 transitions. [2020-10-14 09:01:41,037 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 745 transitions. Word has length 130 [2020-10-14 09:01:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:41,038 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 745 transitions. [2020-10-14 09:01:41,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 745 transitions. [2020-10-14 09:01:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:01:41,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:41,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:41,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:01:41,040 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:41,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1041923771, now seen corresponding path program 1 times [2020-10-14 09:01:41,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:41,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171485964] [2020-10-14 09:01:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:01:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:01:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:01:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:46,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 09:01:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:46,411 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:01:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:46,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:46,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:46,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 09:01:46,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:46,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171485964] [2020-10-14 09:01:46,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:46,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:46,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130366053] [2020-10-14 09:01:46,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:46,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:46,531 INFO L87 Difference]: Start difference. First operand 506 states and 745 transitions. Second operand 6 states. [2020-10-14 09:01:46,936 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:01:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:48,218 INFO L93 Difference]: Finished difference Result 1306 states and 1998 transitions. [2020-10-14 09:01:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:48,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-14 09:01:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:48,227 INFO L225 Difference]: With dead ends: 1306 [2020-10-14 09:01:48,227 INFO L226 Difference]: Without dead ends: 883 [2020-10-14 09:01:48,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:01:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-14 09:01:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 881. [2020-10-14 09:01:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-10-14 09:01:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1334 transitions. [2020-10-14 09:01:48,291 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1334 transitions. Word has length 131 [2020-10-14 09:01:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:48,293 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1334 transitions. [2020-10-14 09:01:48,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1334 transitions. [2020-10-14 09:01:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 09:01:48,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:48,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:48,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:01:48,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:48,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1317198340, now seen corresponding path program 1 times [2020-10-14 09:01:48,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:48,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441368044] [2020-10-14 09:01:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:52,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:53,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 09:01:53,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:01:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:01:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:53,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 09:01:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:53,666 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:01:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:53,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:53,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:53,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 09:01:53,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:53,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:53,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441368044] [2020-10-14 09:01:53,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:53,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:53,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090413861] [2020-10-14 09:01:53,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:53,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:53,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:53,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:53,754 INFO L87 Difference]: Start difference. First operand 881 states and 1334 transitions. Second operand 6 states. [2020-10-14 09:01:54,037 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-14 09:01:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:55,284 INFO L93 Difference]: Finished difference Result 2389 states and 3702 transitions. [2020-10-14 09:01:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:55,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-14 09:01:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:55,293 INFO L225 Difference]: With dead ends: 2389 [2020-10-14 09:01:55,294 INFO L226 Difference]: Without dead ends: 1599 [2020-10-14 09:01:55,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:01:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-10-14 09:01:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1597. [2020-10-14 09:01:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1597 states. [2020-10-14 09:01:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2453 transitions. [2020-10-14 09:01:55,394 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2453 transitions. Word has length 132 [2020-10-14 09:01:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:55,395 INFO L479 AbstractCegarLoop]: Abstraction has 1597 states and 2453 transitions. [2020-10-14 09:01:55,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2453 transitions. [2020-10-14 09:01:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 09:01:55,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:55,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:55,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:01:55,398 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash -859973117, now seen corresponding path program 1 times [2020-10-14 09:01:55,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:55,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345752574] [2020-10-14 09:01:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:55,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:00,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 09:02:00,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:02:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:02:00,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:00,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 09:02:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:00,730 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:00,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:00,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:02:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:00,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:00,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345752574] [2020-10-14 09:02:00,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:00,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:00,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704403182] [2020-10-14 09:02:00,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:00,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:00,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:00,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:00,804 INFO L87 Difference]: Start difference. First operand 1597 states and 2453 transitions. Second operand 6 states. [2020-10-14 09:02:01,085 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-14 09:02:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:02,359 INFO L93 Difference]: Finished difference Result 4576 states and 7113 transitions. [2020-10-14 09:02:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:02,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-14 09:02:02,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:02,380 INFO L225 Difference]: With dead ends: 4576 [2020-10-14 09:02:02,381 INFO L226 Difference]: Without dead ends: 3058 [2020-10-14 09:02:02,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-10-14 09:02:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2020-10-14 09:02:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3056 states. [2020-10-14 09:02:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4724 transitions. [2020-10-14 09:02:02,632 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4724 transitions. Word has length 133 [2020-10-14 09:02:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:02,633 INFO L479 AbstractCegarLoop]: Abstraction has 3056 states and 4724 transitions. [2020-10-14 09:02:02,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4724 transitions. [2020-10-14 09:02:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 09:02:02,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:02,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:02,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:02:02,636 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1086545519, now seen corresponding path program 1 times [2020-10-14 09:02:02,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:02,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745770534] [2020-10-14 09:02:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:07,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:07,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 09:02:07,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:02:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:02:07,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:07,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 09:02:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:07,961 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:07,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:02:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:07,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:08,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745770534] [2020-10-14 09:02:08,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:08,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:08,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902205359] [2020-10-14 09:02:08,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:08,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:08,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:08,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:08,022 INFO L87 Difference]: Start difference. First operand 3056 states and 4724 transitions. Second operand 6 states. [2020-10-14 09:02:08,305 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-14 09:02:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:09,647 INFO L93 Difference]: Finished difference Result 8946 states and 13908 transitions. [2020-10-14 09:02:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:09,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 09:02:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:09,680 INFO L225 Difference]: With dead ends: 8946 [2020-10-14 09:02:09,680 INFO L226 Difference]: Without dead ends: 5965 [2020-10-14 09:02:09,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2020-10-14 09:02:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 5963. [2020-10-14 09:02:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5963 states. [2020-10-14 09:02:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 9227 transitions. [2020-10-14 09:02:10,071 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 9227 transitions. Word has length 134 [2020-10-14 09:02:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:10,072 INFO L479 AbstractCegarLoop]: Abstraction has 5963 states and 9227 transitions. [2020-10-14 09:02:10,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 9227 transitions. [2020-10-14 09:02:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 09:02:10,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:10,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:10,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:02:10,077 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:10,078 INFO L82 PathProgramCache]: Analyzing trace with hash -764948910, now seen corresponding path program 1 times [2020-10-14 09:02:10,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:10,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581301817] [2020-10-14 09:02:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 09:02:15,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:02:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:02:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:15,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 09:02:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:15,491 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:15,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:15,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:15,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:15,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581301817] [2020-10-14 09:02:15,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:15,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:15,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504463654] [2020-10-14 09:02:15,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:15,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:15,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:15,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:15,543 INFO L87 Difference]: Start difference. First operand 5963 states and 9227 transitions. Second operand 6 states. [2020-10-14 09:02:15,858 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-14 09:02:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:17,359 INFO L93 Difference]: Finished difference Result 17644 states and 27367 transitions. [2020-10-14 09:02:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:17,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-14 09:02:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:17,411 INFO L225 Difference]: With dead ends: 17644 [2020-10-14 09:02:17,412 INFO L226 Difference]: Without dead ends: 11752 [2020-10-14 09:02:17,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11752 states. [2020-10-14 09:02:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11752 to 11750. [2020-10-14 09:02:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11750 states. [2020-10-14 09:02:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11750 states to 11750 states and 18146 transitions. [2020-10-14 09:02:18,155 INFO L78 Accepts]: Start accepts. Automaton has 11750 states and 18146 transitions. Word has length 135 [2020-10-14 09:02:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:18,156 INFO L479 AbstractCegarLoop]: Abstraction has 11750 states and 18146 transitions. [2020-10-14 09:02:18,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11750 states and 18146 transitions. [2020-10-14 09:02:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:02:18,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:18,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:18,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:02:18,164 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash 320068672, now seen corresponding path program 1 times [2020-10-14 09:02:18,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:18,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803907666] [2020-10-14 09:02:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:21,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:02:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:02:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:23,473 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:23,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:23,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:23,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:02:23,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:23,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:23,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803907666] [2020-10-14 09:02:23,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:23,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:23,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493175132] [2020-10-14 09:02:23,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:23,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:23,531 INFO L87 Difference]: Start difference. First operand 11750 states and 18146 transitions. Second operand 4 states. [2020-10-14 09:02:23,775 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-14 09:02:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:25,832 INFO L93 Difference]: Finished difference Result 33794 states and 52068 transitions. [2020-10-14 09:02:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:25,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:02:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:25,892 INFO L225 Difference]: With dead ends: 33794 [2020-10-14 09:02:25,893 INFO L226 Difference]: Without dead ends: 22848 [2020-10-14 09:02:25,913 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 [2020-10-14 09:02:25,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22848 states. [2020-10-14 09:02:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22848 to 22846. [2020-10-14 09:02:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22846 states. [2020-10-14 09:02:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22846 states to 22846 states and 34978 transitions. [2020-10-14 09:02:26,979 INFO L78 Accepts]: Start accepts. Automaton has 22846 states and 34978 transitions. Word has length 136 [2020-10-14 09:02:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:26,979 INFO L479 AbstractCegarLoop]: Abstraction has 22846 states and 34978 transitions. [2020-10-14 09:02:26,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 22846 states and 34978 transitions. [2020-10-14 09:02:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:02:26,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:26,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:26,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:02:26,990 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1390614222, now seen corresponding path program 1 times [2020-10-14 09:02:26,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:26,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055898131] [2020-10-14 09:02:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:31,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:32,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:02:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:02:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:02:32,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:32,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:02:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 09:02:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:32,324 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:32,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:32,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:32,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:02:32,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:32,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:32,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055898131] [2020-10-14 09:02:32,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:32,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:32,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068815543] [2020-10-14 09:02:32,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:32,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:32,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:32,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:32,373 INFO L87 Difference]: Start difference. First operand 22846 states and 34978 transitions. Second operand 6 states. [2020-10-14 09:02:32,653 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-14 09:02:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:35,588 INFO L93 Difference]: Finished difference Result 63233 states and 96781 transitions. [2020-10-14 09:02:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:35,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 09:02:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:35,666 INFO L225 Difference]: With dead ends: 63233 [2020-10-14 09:02:35,667 INFO L226 Difference]: Without dead ends: 41855 [2020-10-14 09:02:35,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41855 states. [2020-10-14 09:02:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41855 to 33765. [2020-10-14 09:02:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33765 states. [2020-10-14 09:02:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33765 states to 33765 states and 51770 transitions. [2020-10-14 09:02:37,692 INFO L78 Accepts]: Start accepts. Automaton has 33765 states and 51770 transitions. Word has length 138 [2020-10-14 09:02:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:37,692 INFO L479 AbstractCegarLoop]: Abstraction has 33765 states and 51770 transitions. [2020-10-14 09:02:37,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 33765 states and 51770 transitions. [2020-10-14 09:02:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:02:37,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:37,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:37,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:02:37,703 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:37,704 INFO L82 PathProgramCache]: Analyzing trace with hash 530036551, now seen corresponding path program 1 times [2020-10-14 09:02:37,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:37,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964796305] [2020-10-14 09:02:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:42,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:42,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:02:42,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:02:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:02:42,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:42,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 09:02:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 09:02:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:43,027 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:43,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964796305] [2020-10-14 09:02:43,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:43,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:43,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527046932] [2020-10-14 09:02:43,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:43,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:43,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:43,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:43,071 INFO L87 Difference]: Start difference. First operand 33765 states and 51770 transitions. Second operand 6 states. [2020-10-14 09:02:43,346 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-14 09:02:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:47,779 INFO L93 Difference]: Finished difference Result 102905 states and 157485 transitions. [2020-10-14 09:02:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:47,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 09:02:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:47,885 INFO L225 Difference]: With dead ends: 102905 [2020-10-14 09:02:47,885 INFO L226 Difference]: Without dead ends: 70583 [2020-10-14 09:02:47,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70583 states. [2020-10-14 09:02:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70583 to 56307. [2020-10-14 09:02:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56307 states. [2020-10-14 09:02:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56307 states to 56307 states and 86442 transitions. [2020-10-14 09:02:52,444 INFO L78 Accepts]: Start accepts. Automaton has 56307 states and 86442 transitions. Word has length 138 [2020-10-14 09:02:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:52,444 INFO L479 AbstractCegarLoop]: Abstraction has 56307 states and 86442 transitions. [2020-10-14 09:02:52,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 56307 states and 86442 transitions. [2020-10-14 09:02:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:02:52,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:52,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:02:52,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:02:52,459 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1790235185, now seen corresponding path program 1 times [2020-10-14 09:02:52,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:52,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747578872] [2020-10-14 09:02:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:57,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:57,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:02:57,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:02:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:02:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:57,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:02:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 09:02:57,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:57,781 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:02:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:57,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:57,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:57,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:02:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:57,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:57,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747578872] [2020-10-14 09:02:57,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:57,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:57,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638525283] [2020-10-14 09:02:57,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:57,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:57,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:57,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:57,829 INFO L87 Difference]: Start difference. First operand 56307 states and 86442 transitions. Second operand 6 states. [2020-10-14 09:02:58,103 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-14 09:03:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:03,236 INFO L93 Difference]: Finished difference Result 140095 states and 214397 transitions. [2020-10-14 09:03:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:03,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 09:03:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:03,351 INFO L225 Difference]: With dead ends: 140095 [2020-10-14 09:03:03,351 INFO L226 Difference]: Without dead ends: 85885 [2020-10-14 09:03:03,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:03:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85885 states. [2020-10-14 09:03:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85885 to 67513. [2020-10-14 09:03:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67513 states. [2020-10-14 09:03:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67513 states to 67513 states and 103674 transitions. [2020-10-14 09:03:06,961 INFO L78 Accepts]: Start accepts. Automaton has 67513 states and 103674 transitions. Word has length 138 [2020-10-14 09:03:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:06,961 INFO L479 AbstractCegarLoop]: Abstraction has 67513 states and 103674 transitions. [2020-10-14 09:03:06,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 67513 states and 103674 transitions. [2020-10-14 09:03:06,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:03:06,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:06,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:06,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:03:06,976 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:06,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:06,976 INFO L82 PathProgramCache]: Analyzing trace with hash 538915553, now seen corresponding path program 1 times [2020-10-14 09:03:06,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:06,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481042475] [2020-10-14 09:03:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:13,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:03:13,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:03:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6478 [2020-10-14 09:03:13,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:13,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 09:03:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 09:03:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:13,816 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:03:13,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:13,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:13,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:03:13,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:13,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:13,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481042475] [2020-10-14 09:03:13,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:13,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:13,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064274850] [2020-10-14 09:03:13,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:13,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:13,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:13,860 INFO L87 Difference]: Start difference. First operand 67513 states and 103674 transitions. Second operand 6 states. [2020-10-14 09:03:14,133 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-14 09:03:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:19,456 INFO L93 Difference]: Finished difference Result 162367 states and 248445 transitions. [2020-10-14 09:03:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:19,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 09:03:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:19,566 INFO L225 Difference]: With dead ends: 162367 [2020-10-14 09:03:19,566 INFO L226 Difference]: Without dead ends: 97213 [2020-10-14 09:03:19,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:03:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97213 states. [2020-10-14 09:03:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97213 to 78457. [2020-10-14 09:03:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78457 states. [2020-10-14 09:03:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78457 states to 78457 states and 120506 transitions. [2020-10-14 09:03:23,530 INFO L78 Accepts]: Start accepts. Automaton has 78457 states and 120506 transitions. Word has length 138 [2020-10-14 09:03:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:23,531 INFO L479 AbstractCegarLoop]: Abstraction has 78457 states and 120506 transitions. [2020-10-14 09:03:23,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 78457 states and 120506 transitions. [2020-10-14 09:03:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:03:23,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:23,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:23,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:03:23,542 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1742030229, now seen corresponding path program 1 times [2020-10-14 09:03:23,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:23,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289714604] [2020-10-14 09:03:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:28,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:03:28,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:03:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:03:28,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:28,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 09:03:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:28,836 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:03:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:03:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:28,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:28,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289714604] [2020-10-14 09:03:28,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:28,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:28,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405091376] [2020-10-14 09:03:28,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:28,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:28,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:28,870 INFO L87 Difference]: Start difference. First operand 78457 states and 120506 transitions. Second operand 4 states. [2020-10-14 09:03:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:37,248 INFO L93 Difference]: Finished difference Result 224893 states and 343740 transitions. [2020-10-14 09:03:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:03:37,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-14 09:03:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:37,470 INFO L225 Difference]: With dead ends: 224893 [2020-10-14 09:03:37,470 INFO L226 Difference]: Without dead ends: 148795 [2020-10-14 09:03:37,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148795 states. [2020-10-14 09:03:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148795 to 147001. [2020-10-14 09:03:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147001 states. [2020-10-14 09:03:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147001 states to 147001 states and 222586 transitions. [2020-10-14 09:03:47,610 INFO L78 Accepts]: Start accepts. Automaton has 147001 states and 222586 transitions. Word has length 138 [2020-10-14 09:03:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:47,610 INFO L479 AbstractCegarLoop]: Abstraction has 147001 states and 222586 transitions. [2020-10-14 09:03:47,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 147001 states and 222586 transitions. [2020-10-14 09:03:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:03:47,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:47,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:47,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:03:47,621 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1462680022, now seen corresponding path program 1 times [2020-10-14 09:03:47,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:47,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527270831] [2020-10-14 09:03:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:50,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:03:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:03:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:03:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:52,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 09:03:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:03:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:54,840 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:03:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:54,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:54,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527270831] [2020-10-14 09:03:54,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:54,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:54,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648607535] [2020-10-14 09:03:54,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:54,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:54,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:54,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:54,879 INFO L87 Difference]: Start difference. First operand 147001 states and 222586 transitions. Second operand 4 states. [2020-10-14 09:03:55,134 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-14 09:04:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:04,906 INFO L93 Difference]: Finished difference Result 312381 states and 472956 transitions. [2020-10-14 09:04:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:04:04,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-14 09:04:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:05,164 INFO L225 Difference]: With dead ends: 312381 [2020-10-14 09:04:05,164 INFO L226 Difference]: Without dead ends: 167739 [2020-10-14 09:04:05,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:04:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167739 states. [2020-10-14 09:04:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167739 to 167737. [2020-10-14 09:04:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167737 states. [2020-10-14 09:04:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167737 states to 167737 states and 253690 transitions. [2020-10-14 09:04:18,491 INFO L78 Accepts]: Start accepts. Automaton has 167737 states and 253690 transitions. Word has length 138 [2020-10-14 09:04:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:18,491 INFO L479 AbstractCegarLoop]: Abstraction has 167737 states and 253690 transitions. [2020-10-14 09:04:18,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:18,491 INFO L276 IsEmpty]: Start isEmpty. Operand 167737 states and 253690 transitions. [2020-10-14 09:04:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:04:18,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:18,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:18,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:04:18,503 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:18,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1275335653, now seen corresponding path program 1 times [2020-10-14 09:04:18,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:18,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187439823] [2020-10-14 09:04:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:04:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:04:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:04:23,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:23,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:04:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:04:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:23,807 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 09:04:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:23,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:23,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:23,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:04:23,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:23,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:23,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187439823] [2020-10-14 09:04:23,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:23,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:04:23,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174838649] [2020-10-14 09:04:23,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:23,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:23,851 INFO L87 Difference]: Start difference. First operand 167737 states and 253690 transitions. Second operand 6 states. [2020-10-14 09:04:24,133 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-14 09:04:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:37,999 INFO L93 Difference]: Finished difference Result 394622 states and 595388 transitions. [2020-10-14 09:04:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:04:37,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 09:04:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:38,308 INFO L225 Difference]: With dead ends: 394622 [2020-10-14 09:04:38,308 INFO L226 Difference]: Without dead ends: 229244 [2020-10-14 09:04:38,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:04:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229244 states.