/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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:26:08,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:26:08,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:26:08,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:26:08,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:26:08,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:26:08,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:26:08,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:26:08,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:26:08,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:26:08,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:26:08,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:26:08,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:26:08,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:26:08,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:26:08,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:26:08,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:26:08,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:26:08,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:26:08,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:26:08,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:26:08,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:26:08,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:26:08,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:26:08,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:26:08,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:26:08,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:26:08,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:26:08,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:26:08,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:26:08,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:26:08,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:26:08,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:26:08,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:26:08,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:26:08,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:26:08,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:26:08,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:26:08,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:26:08,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:26:08,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:26:08,954 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 09:26:08,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:26:08,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:26:08,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:26:08,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:26:08,978 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:26:08,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:26:08,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:26:08,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:26:08,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:26:08,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:26:08,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:26:08,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:26:08,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:26:08,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:26:08,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:26:08,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:26:08,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:26:08,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:26:08,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:26:08,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:26:08,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:26:08,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:26:08,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:26:08,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:26:08,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:26:08,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:26:08,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:26:08,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:26:08,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:26:08,984 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 09:26:09,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:26:09,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:26:09,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:26:09,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:26:09,348 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:26:09,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:26:09,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e38870ddc/5770ff39df154b13893b19410382e5e1/FLAG559e67b31 [2020-10-14 09:26:10,101 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:26:10,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:26:10,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e38870ddc/5770ff39df154b13893b19410382e5e1/FLAG559e67b31 [2020-10-14 09:26:10,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e38870ddc/5770ff39df154b13893b19410382e5e1 [2020-10-14 09:26:10,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:26:10,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:26:10,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:26:10,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:26:10,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:26:10,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:10" (1/1) ... [2020-10-14 09:26:10,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be6475b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:10, skipping insertion in model container [2020-10-14 09:26:10,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:10" (1/1) ... [2020-10-14 09:26:10,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:26:10,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:26:10,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:26:10,969 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:26:11,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:26:11,188 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:26:11,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11 WrapperNode [2020-10-14 09:26:11,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:26:11,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:26:11,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:26:11,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:26:11,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (1/1) ... [2020-10-14 09:26:11,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:26:11,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:26:11,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:26:11,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:26:11,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (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 09:26:11,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:26:11,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:26:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:26:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:26:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:26:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:26:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:26:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:26:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:26:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:26:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:26:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:26:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:26:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:26:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:26:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:26:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:26:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:26:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:26:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:26:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:26:12,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:26:12,792 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:26:12,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:12 BoogieIcfgContainer [2020-10-14 09:26:12,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:26:12,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:26:12,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:26:12,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:26:12,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:26:10" (1/3) ... [2020-10-14 09:26:12,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@894a329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:12, skipping insertion in model container [2020-10-14 09:26:12,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:11" (2/3) ... [2020-10-14 09:26:12,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@894a329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:12, skipping insertion in model container [2020-10-14 09:26:12,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:12" (3/3) ... [2020-10-14 09:26:12,811 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:26:12,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:26:12,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:26:12,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:26:12,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:26:12,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:26:12,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:26:12,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:26:12,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:26:12,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:26:12,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:26:12,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:26:12,985 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states. [2020-10-14 09:26:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 09:26:13,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:13,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:13,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:13,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1531384802, now seen corresponding path program 1 times [2020-10-14 09:26:13,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:13,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915697159] [2020-10-14 09:26:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:18,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:18,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 09:26:18,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:26:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:26:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:18,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:26:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 09:26:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:26:18,850 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:26:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:18,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:18,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:18,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:26:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:18,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:18,927 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 09:26:18,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915697159] [2020-10-14 09:26:18,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:18,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:18,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915565226] [2020-10-14 09:26:18,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:18,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:18,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:18,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:18,955 INFO L87 Difference]: Start difference. First operand 349 states. Second operand 4 states. [2020-10-14 09:26:19,240 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:26:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:21,014 INFO L93 Difference]: Finished difference Result 691 states and 1194 transitions. [2020-10-14 09:26:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:21,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-14 09:26:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:21,037 INFO L225 Difference]: With dead ends: 691 [2020-10-14 09:26:21,037 INFO L226 Difference]: Without dead ends: 561 [2020-10-14 09:26:21,044 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 09:26:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-14 09:26:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 559. [2020-10-14 09:26:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 09:26:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 834 transitions. [2020-10-14 09:26:21,139 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 834 transitions. Word has length 159 [2020-10-14 09:26:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:21,139 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 834 transitions. [2020-10-14 09:26:21,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 834 transitions. [2020-10-14 09:26:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 09:26:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:21,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:21,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:26:21,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1269708169, now seen corresponding path program 1 times [2020-10-14 09:26:21,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863548174] [2020-10-14 09:26:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:26,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 09:26:26,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:26:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:26:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:26,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:26:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 09:26:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:26,679 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:26:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:26,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:26,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:26,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:26,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:26:26,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:26,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:26:26,819 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 09:26:26,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863548174] [2020-10-14 09:26:26,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:26,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:26,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780351324] [2020-10-14 09:26:26,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:26,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:26,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:26,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:26,827 INFO L87 Difference]: Start difference. First operand 559 states and 834 transitions. Second operand 4 states. [2020-10-14 09:26:27,123 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:26:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:28,523 INFO L93 Difference]: Finished difference Result 1187 states and 1819 transitions. [2020-10-14 09:26:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:28,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-14 09:26:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:28,531 INFO L225 Difference]: With dead ends: 1187 [2020-10-14 09:26:28,531 INFO L226 Difference]: Without dead ends: 973 [2020-10-14 09:26:28,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-14 09:26:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2020-10-14 09:26:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-10-14 09:26:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1462 transitions. [2020-10-14 09:26:28,584 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1462 transitions. Word has length 159 [2020-10-14 09:26:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:28,585 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1462 transitions. [2020-10-14 09:26:28,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1462 transitions. [2020-10-14 09:26:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 09:26:28,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:28,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:28,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:26:28,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:28,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1071854982, now seen corresponding path program 1 times [2020-10-14 09:26:28,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:28,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250203916] [2020-10-14 09:26:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:28,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:33,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:33,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 09:26:33,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:26:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:26:33,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:33,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:33,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:26:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:34,180 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:26:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:34,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:34,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:26:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:34,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:34,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:34,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:26:34,439 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 09:26:34,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250203916] [2020-10-14 09:26:34,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:34,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:34,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332986877] [2020-10-14 09:26:34,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:34,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:34,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:34,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:34,452 INFO L87 Difference]: Start difference. First operand 971 states and 1462 transitions. Second operand 5 states. [2020-10-14 09:26:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:37,297 INFO L93 Difference]: Finished difference Result 2824 states and 4241 transitions. [2020-10-14 09:26:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:37,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 09:26:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:37,315 INFO L225 Difference]: With dead ends: 2824 [2020-10-14 09:26:37,315 INFO L226 Difference]: Without dead ends: 1874 [2020-10-14 09:26:37,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:26:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-10-14 09:26:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1872. [2020-10-14 09:26:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2020-10-14 09:26:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2791 transitions. [2020-10-14 09:26:37,440 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2791 transitions. Word has length 159 [2020-10-14 09:26:37,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:37,440 INFO L479 AbstractCegarLoop]: Abstraction has 1872 states and 2791 transitions. [2020-10-14 09:26:37,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2791 transitions. [2020-10-14 09:26:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 09:26:37,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:37,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:37,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:26:37,448 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:37,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:37,448 INFO L82 PathProgramCache]: Analyzing trace with hash 259936683, now seen corresponding path program 1 times [2020-10-14 09:26:37,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:37,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400374444] [2020-10-14 09:26:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:37,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:42,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:42,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 09:26:42,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:26:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:26:42,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:42,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:26:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:26:42,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:42,805 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:26:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:42,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:42,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:26:42,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:42,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:42,880 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 09:26:42,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400374444] [2020-10-14 09:26:42,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:42,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:42,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641234076] [2020-10-14 09:26:42,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:42,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:42,883 INFO L87 Difference]: Start difference. First operand 1872 states and 2791 transitions. Second operand 4 states. [2020-10-14 09:26:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:44,591 INFO L93 Difference]: Finished difference Result 5577 states and 8313 transitions. [2020-10-14 09:26:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:44,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-14 09:26:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:44,611 INFO L225 Difference]: With dead ends: 5577 [2020-10-14 09:26:44,611 INFO L226 Difference]: Without dead ends: 3730 [2020-10-14 09:26:44,616 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 09:26:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2020-10-14 09:26:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 1875. [2020-10-14 09:26:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-14 09:26:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2795 transitions. [2020-10-14 09:26:44,820 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2795 transitions. Word has length 160 [2020-10-14 09:26:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:44,820 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2795 transitions. [2020-10-14 09:26:44,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2795 transitions. [2020-10-14 09:26:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 09:26:44,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:44,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:44,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:26:44,829 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1770567573, now seen corresponding path program 1 times [2020-10-14 09:26:44,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:44,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472787413] [2020-10-14 09:26:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 09:26:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:26:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:26:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:49,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:26:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 09:26:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:50,139 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:26:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:50,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:50,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:50,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:50,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:26:50,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:50,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:26:50,196 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 09:26:50,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472787413] [2020-10-14 09:26:50,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:50,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:50,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693147480] [2020-10-14 09:26:50,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:50,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:50,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:50,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:50,198 INFO L87 Difference]: Start difference. First operand 1875 states and 2795 transitions. Second operand 4 states. [2020-10-14 09:26:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:52,948 INFO L93 Difference]: Finished difference Result 4964 states and 7393 transitions. [2020-10-14 09:26:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:52,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-14 09:26:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:52,966 INFO L225 Difference]: With dead ends: 4964 [2020-10-14 09:26:52,967 INFO L226 Difference]: Without dead ends: 3258 [2020-10-14 09:26:52,971 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 09:26:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2020-10-14 09:26:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3256. [2020-10-14 09:26:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3256 states. [2020-10-14 09:26:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4787 transitions. [2020-10-14 09:26:53,139 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4787 transitions. Word has length 161 [2020-10-14 09:26:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:53,139 INFO L479 AbstractCegarLoop]: Abstraction has 3256 states and 4787 transitions. [2020-10-14 09:26:53,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4787 transitions. [2020-10-14 09:26:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 09:26:53,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:53,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:53,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:26:53,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:53,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:53,147 INFO L82 PathProgramCache]: Analyzing trace with hash 399303726, now seen corresponding path program 1 times [2020-10-14 09:26:53,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:53,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498510732] [2020-10-14 09:26:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 09:26:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:26:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:26:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:58,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 09:26:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:58,473 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:26:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:58,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:58,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:58,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:58,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:26:58,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:58,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:58,592 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 09:26:58,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498510732] [2020-10-14 09:26:58,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:58,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:58,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384771771] [2020-10-14 09:26:58,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:58,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:58,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:58,595 INFO L87 Difference]: Start difference. First operand 3256 states and 4787 transitions. Second operand 5 states. [2020-10-14 09:27:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:01,106 INFO L93 Difference]: Finished difference Result 9450 states and 13830 transitions. [2020-10-14 09:27:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:01,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-14 09:27:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:01,135 INFO L225 Difference]: With dead ends: 9450 [2020-10-14 09:27:01,135 INFO L226 Difference]: Without dead ends: 6266 [2020-10-14 09:27:01,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2020-10-14 09:27:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6264. [2020-10-14 09:27:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6264 states. [2020-10-14 09:27:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 9086 transitions. [2020-10-14 09:27:01,518 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 9086 transitions. Word has length 161 [2020-10-14 09:27:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:01,518 INFO L479 AbstractCegarLoop]: Abstraction has 6264 states and 9086 transitions. [2020-10-14 09:27:01,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 9086 transitions. [2020-10-14 09:27:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 09:27:01,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:01,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:01,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:27:01,529 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1136308339, now seen corresponding path program 1 times [2020-10-14 09:27:01,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:01,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907175938] [2020-10-14 09:27:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:06,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:06,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 09:27:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:27:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:27:06,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:06,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 09:27:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:27:06,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:06,805 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:27:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:06,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:06,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:27:06,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:06,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:27:06,872 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 09:27:06,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907175938] [2020-10-14 09:27:06,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:06,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:06,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923056426] [2020-10-14 09:27:06,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:06,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:06,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:06,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:06,874 INFO L87 Difference]: Start difference. First operand 6264 states and 9086 transitions. Second operand 4 states. [2020-10-14 09:27:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:09,603 INFO L93 Difference]: Finished difference Result 18308 states and 26576 transitions. [2020-10-14 09:27:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:09,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-14 09:27:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:09,650 INFO L225 Difference]: With dead ends: 18308 [2020-10-14 09:27:09,650 INFO L226 Difference]: Without dead ends: 12426 [2020-10-14 09:27:09,662 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 09:27:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2020-10-14 09:27:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 6276. [2020-10-14 09:27:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6276 states. [2020-10-14 09:27:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 9102 transitions. [2020-10-14 09:27:10,049 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 9102 transitions. Word has length 162 [2020-10-14 09:27:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:10,050 INFO L479 AbstractCegarLoop]: Abstraction has 6276 states and 9102 transitions. [2020-10-14 09:27:10,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 9102 transitions. [2020-10-14 09:27:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 09:27:10,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:10,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:10,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:27:10,060 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:10,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1075166451, now seen corresponding path program 1 times [2020-10-14 09:27:10,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:10,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200266477] [2020-10-14 09:27:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:15,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:15,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 09:27:15,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:27:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:27:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:15,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:27:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 09:27:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:15,391 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:27:15,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:15,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:15,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:15,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:15,441 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 09:27:15,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200266477] [2020-10-14 09:27:15,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:15,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055650227] [2020-10-14 09:27:15,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:15,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:15,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:15,444 INFO L87 Difference]: Start difference. First operand 6276 states and 9102 transitions. Second operand 5 states. [2020-10-14 09:27:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:18,444 INFO L93 Difference]: Finished difference Result 16652 states and 24130 transitions. [2020-10-14 09:27:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:18,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-14 09:27:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:18,468 INFO L225 Difference]: With dead ends: 16652 [2020-10-14 09:27:18,468 INFO L226 Difference]: Without dead ends: 10666 [2020-10-14 09:27:18,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10666 states. [2020-10-14 09:27:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10666 to 10664. [2020-10-14 09:27:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10664 states. [2020-10-14 09:27:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10664 states to 10664 states and 15276 transitions. [2020-10-14 09:27:19,143 INFO L78 Accepts]: Start accepts. Automaton has 10664 states and 15276 transitions. Word has length 163 [2020-10-14 09:27:19,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:19,143 INFO L479 AbstractCegarLoop]: Abstraction has 10664 states and 15276 transitions. [2020-10-14 09:27:19,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 10664 states and 15276 transitions. [2020-10-14 09:27:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 09:27:19,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:19,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:19,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:27:19,157 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -451397640, now seen corresponding path program 1 times [2020-10-14 09:27:19,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:19,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520675912] [2020-10-14 09:27:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:24,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 09:27:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:24,503 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:27:24,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:24,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:24,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:24,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:27:24,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:24,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:27:24,633 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 09:27:24,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520675912] [2020-10-14 09:27:24,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:24,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:24,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677815591] [2020-10-14 09:27:24,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:24,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:24,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:24,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:24,640 INFO L87 Difference]: Start difference. First operand 10664 states and 15276 transitions. Second operand 5 states. [2020-10-14 09:27:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:27,907 INFO L93 Difference]: Finished difference Result 20571 states and 29560 transitions. [2020-10-14 09:27:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:27,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-14 09:27:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:27,931 INFO L225 Difference]: With dead ends: 20571 [2020-10-14 09:27:27,932 INFO L226 Difference]: Without dead ends: 11156 [2020-10-14 09:27:27,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2020-10-14 09:27:28,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 10896. [2020-10-14 09:27:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10896 states. [2020-10-14 09:27:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10896 states to 10896 states and 15555 transitions. [2020-10-14 09:27:28,700 INFO L78 Accepts]: Start accepts. Automaton has 10896 states and 15555 transitions. Word has length 163 [2020-10-14 09:27:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:28,700 INFO L479 AbstractCegarLoop]: Abstraction has 10896 states and 15555 transitions. [2020-10-14 09:27:28,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 10896 states and 15555 transitions. [2020-10-14 09:27:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 09:27:28,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:28,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:28,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:27:28,712 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1540675191, now seen corresponding path program 1 times [2020-10-14 09:27:28,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:28,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545772805] [2020-10-14 09:27:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:28,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:33,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:33,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 09:27:33,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:27:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 09:27:33,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:33,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:27:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:27:33,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:33,974 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:27:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:33,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:34,003 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 09:27:34,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545772805] [2020-10-14 09:27:34,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:34,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:34,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497428954] [2020-10-14 09:27:34,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:34,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:34,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:34,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:34,005 INFO L87 Difference]: Start difference. First operand 10896 states and 15555 transitions. Second operand 4 states. [2020-10-14 09:27:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:37,316 INFO L93 Difference]: Finished difference Result 32282 states and 46104 transitions. [2020-10-14 09:27:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:37,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-14 09:27:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:37,368 INFO L225 Difference]: With dead ends: 32282 [2020-10-14 09:27:37,369 INFO L226 Difference]: Without dead ends: 21714 [2020-10-14 09:27:37,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21714 states. [2020-10-14 09:27:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21714 to 10923. [2020-10-14 09:27:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10923 states. [2020-10-14 09:27:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 15591 transitions. [2020-10-14 09:27:38,254 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 15591 transitions. Word has length 164 [2020-10-14 09:27:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:38,254 INFO L479 AbstractCegarLoop]: Abstraction has 10923 states and 15591 transitions. [2020-10-14 09:27:38,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 15591 transitions. [2020-10-14 09:27:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 09:27:38,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:38,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:38,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:27:38,264 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1325042409, now seen corresponding path program 1 times [2020-10-14 09:27:38,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:38,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797360827] [2020-10-14 09:27:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:43,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:43,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 09:27:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:27:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:27:43,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:43,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:27:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:27:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:43,673 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:27:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:43,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:43,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:43,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:27:43,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:43,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:43,710 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 09:27:43,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797360827] [2020-10-14 09:27:43,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:43,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:43,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850485659] [2020-10-14 09:27:43,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:43,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:43,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:43,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:43,712 INFO L87 Difference]: Start difference. First operand 10923 states and 15591 transitions. Second operand 5 states. [2020-10-14 09:27:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:45,647 INFO L93 Difference]: Finished difference Result 18875 states and 26952 transitions. [2020-10-14 09:27:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:45,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 09:27:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:45,664 INFO L225 Difference]: With dead ends: 18875 [2020-10-14 09:27:45,665 INFO L226 Difference]: Without dead ends: 8016 [2020-10-14 09:27:45,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2020-10-14 09:27:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 8016. [2020-10-14 09:27:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8016 states. [2020-10-14 09:27:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 11453 transitions. [2020-10-14 09:27:46,212 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 11453 transitions. Word has length 165 [2020-10-14 09:27:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:46,213 INFO L479 AbstractCegarLoop]: Abstraction has 8016 states and 11453 transitions. [2020-10-14 09:27:46,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 11453 transitions. [2020-10-14 09:27:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 09:27:46,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:46,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:46,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:27:46,220 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1942258919, now seen corresponding path program 1 times [2020-10-14 09:27:46,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:46,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832533315] [2020-10-14 09:27:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:51,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:51,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 09:27:51,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 09:27:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:51,546 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:27:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:51,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:51,577 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 09:27:51,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832533315] [2020-10-14 09:27:51,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:51,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:51,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574851914] [2020-10-14 09:27:51,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:51,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:51,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:51,579 INFO L87 Difference]: Start difference. First operand 8016 states and 11453 transitions. Second operand 4 states. [2020-10-14 09:27:54,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:54,243 INFO L93 Difference]: Finished difference Result 19863 states and 28946 transitions. [2020-10-14 09:27:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:54,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-14 09:27:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:54,263 INFO L225 Difference]: With dead ends: 19863 [2020-10-14 09:27:54,263 INFO L226 Difference]: Without dead ends: 12408 [2020-10-14 09:27:54,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2020-10-14 09:27:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 10540. [2020-10-14 09:27:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10540 states. [2020-10-14 09:27:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10540 states to 10540 states and 15445 transitions. [2020-10-14 09:27:54,973 INFO L78 Accepts]: Start accepts. Automaton has 10540 states and 15445 transitions. Word has length 169 [2020-10-14 09:27:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:54,973 INFO L479 AbstractCegarLoop]: Abstraction has 10540 states and 15445 transitions. [2020-10-14 09:27:54,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 10540 states and 15445 transitions. [2020-10-14 09:27:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 09:27:54,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:54,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:54,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:27:54,980 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:54,981 INFO L82 PathProgramCache]: Analyzing trace with hash 214232500, now seen corresponding path program 1 times [2020-10-14 09:27:54,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:54,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088820895] [2020-10-14 09:27:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:55,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:00,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:00,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 09:28:00,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:28:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:28:00,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:00,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:28:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 09:28:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 09:28:00,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:00,275 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:28:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:00,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:00,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:00,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:28:00,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:00,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:00,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:00,324 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 09:28:00,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088820895] [2020-10-14 09:28:00,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:00,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:28:00,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188027844] [2020-10-14 09:28:00,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:28:00,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:00,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:28:00,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:28:00,328 INFO L87 Difference]: Start difference. First operand 10540 states and 15445 transitions. Second operand 6 states. [2020-10-14 09:28:00,561 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-14 09:28:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:04,463 INFO L93 Difference]: Finished difference Result 35052 states and 53846 transitions. [2020-10-14 09:28:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:28:04,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-14 09:28:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:04,503 INFO L225 Difference]: With dead ends: 35052 [2020-10-14 09:28:04,504 INFO L226 Difference]: Without dead ends: 29504 [2020-10-14 09:28:04,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:28:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29504 states. [2020-10-14 09:28:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29504 to 18684. [2020-10-14 09:28:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18684 states. [2020-10-14 09:28:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18684 states to 18684 states and 27953 transitions. [2020-10-14 09:28:05,879 INFO L78 Accepts]: Start accepts. Automaton has 18684 states and 27953 transitions. Word has length 172 [2020-10-14 09:28:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:05,880 INFO L479 AbstractCegarLoop]: Abstraction has 18684 states and 27953 transitions. [2020-10-14 09:28:05,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:28:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18684 states and 27953 transitions. [2020-10-14 09:28:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 09:28:05,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:05,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:05,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:28:05,887 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash 475909133, now seen corresponding path program 1 times [2020-10-14 09:28:05,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:05,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085723633] [2020-10-14 09:28:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:05,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:10,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:10,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 09:28:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:11,173 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:28:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:11,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:11,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:11,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:11,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:11,223 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 09:28:11,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085723633] [2020-10-14 09:28:11,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:11,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:28:11,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184932276] [2020-10-14 09:28:11,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:28:11,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:28:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:28:11,225 INFO L87 Difference]: Start difference. First operand 18684 states and 27953 transitions. Second operand 5 states. [2020-10-14 09:28:11,450 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:28:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:14,167 INFO L93 Difference]: Finished difference Result 29294 states and 44545 transitions. [2020-10-14 09:28:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:28:14,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 09:28:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:14,188 INFO L225 Difference]: With dead ends: 29294 [2020-10-14 09:28:14,188 INFO L226 Difference]: Without dead ends: 18686 [2020-10-14 09:28:14,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:28:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18686 states. [2020-10-14 09:28:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18686 to 18684. [2020-10-14 09:28:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18684 states. [2020-10-14 09:28:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18684 states to 18684 states and 27809 transitions. [2020-10-14 09:28:15,753 INFO L78 Accepts]: Start accepts. Automaton has 18684 states and 27809 transitions. Word has length 172 [2020-10-14 09:28:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:15,753 INFO L479 AbstractCegarLoop]: Abstraction has 18684 states and 27809 transitions. [2020-10-14 09:28:15,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:28:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 18684 states and 27809 transitions. [2020-10-14 09:28:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 09:28:15,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:15,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:15,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:28:15,760 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash -872601469, now seen corresponding path program 1 times [2020-10-14 09:28:15,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:15,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629285314] [2020-10-14 09:28:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:20,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:20,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 09:28:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:28:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:28:20,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:20,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:28:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 09:28:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 09:28:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:21,041 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:28:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:21,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:28:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:21,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:21,077 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 09:28:21,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629285314] [2020-10-14 09:28:21,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:21,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:28:21,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765859844] [2020-10-14 09:28:21,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:28:21,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:21,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:28:21,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:28:21,079 INFO L87 Difference]: Start difference. First operand 18684 states and 27809 transitions. Second operand 4 states. [2020-10-14 09:28:21,299 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:28:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:25,127 INFO L93 Difference]: Finished difference Result 46342 states and 70045 transitions. [2020-10-14 09:28:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:28:25,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-14 09:28:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:25,165 INFO L225 Difference]: With dead ends: 46342 [2020-10-14 09:28:25,165 INFO L226 Difference]: Without dead ends: 34978 [2020-10-14 09:28:25,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:28:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34978 states. [2020-10-14 09:28:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34978 to 34976. [2020-10-14 09:28:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34976 states. [2020-10-14 09:28:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34976 states to 34976 states and 52419 transitions. [2020-10-14 09:28:27,736 INFO L78 Accepts]: Start accepts. Automaton has 34976 states and 52419 transitions. Word has length 172 [2020-10-14 09:28:27,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:27,736 INFO L479 AbstractCegarLoop]: Abstraction has 34976 states and 52419 transitions. [2020-10-14 09:28:27,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:28:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 34976 states and 52419 transitions. [2020-10-14 09:28:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 09:28:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:27,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:27,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:28:27,747 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1494333353, now seen corresponding path program 1 times [2020-10-14 09:28:27,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:27,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934590780] [2020-10-14 09:28:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:32,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 09:28:32,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:28:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:28:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:32,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:28:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:28:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:28:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:33,040 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:28:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:33,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:33,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:28:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:33,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:33,095 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 09:28:33,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934590780] [2020-10-14 09:28:33,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:33,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:28:33,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199860843] [2020-10-14 09:28:33,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:28:33,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:33,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:28:33,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:28:33,097 INFO L87 Difference]: Start difference. First operand 34976 states and 52419 transitions. Second operand 5 states. [2020-10-14 09:28:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:36,973 INFO L93 Difference]: Finished difference Result 66199 states and 99187 transitions. [2020-10-14 09:28:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:28:36,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 09:28:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:37,009 INFO L225 Difference]: With dead ends: 66199 [2020-10-14 09:28:37,009 INFO L226 Difference]: Without dead ends: 31267 [2020-10-14 09:28:37,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:28:37,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31267 states. [2020-10-14 09:28:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31267 to 31267. [2020-10-14 09:28:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31267 states. [2020-10-14 09:28:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31267 states to 31267 states and 46829 transitions. [2020-10-14 09:28:39,484 INFO L78 Accepts]: Start accepts. Automaton has 31267 states and 46829 transitions. Word has length 172 [2020-10-14 09:28:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:39,485 INFO L479 AbstractCegarLoop]: Abstraction has 31267 states and 46829 transitions. [2020-10-14 09:28:39,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:28:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 31267 states and 46829 transitions. [2020-10-14 09:28:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 09:28:39,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:39,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:39,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:28:39,493 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:39,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1278942446, now seen corresponding path program 1 times [2020-10-14 09:28:39,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:39,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934692199] [2020-10-14 09:28:39,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:44,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 09:28:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:28:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:28:44,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:44,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:28:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 09:28:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:28:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:44,760 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:28:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:28:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:44,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:28:44,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:28:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:28:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:28:44,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:28:44,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:28:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:28:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:28:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:28:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:28:44,799 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 09:28:44,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934692199] [2020-10-14 09:28:44,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:28:44,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:28:44,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216202119] [2020-10-14 09:28:44,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:28:44,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:28:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:28:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:28:44,801 INFO L87 Difference]: Start difference. First operand 31267 states and 46829 transitions. Second operand 4 states. [2020-10-14 09:28:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:50,959 INFO L93 Difference]: Finished difference Result 85041 states and 128689 transitions. [2020-10-14 09:28:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:28:50,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-14 09:28:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:51,040 INFO L225 Difference]: With dead ends: 85041 [2020-10-14 09:28:51,041 INFO L226 Difference]: Without dead ends: 54317 [2020-10-14 09:28:51,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:28:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54317 states. [2020-10-14 09:28:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54317 to 49619. [2020-10-14 09:28:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49619 states. [2020-10-14 09:28:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49619 states to 49619 states and 75472 transitions. [2020-10-14 09:28:56,038 INFO L78 Accepts]: Start accepts. Automaton has 49619 states and 75472 transitions. Word has length 174 [2020-10-14 09:28:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:56,038 INFO L479 AbstractCegarLoop]: Abstraction has 49619 states and 75472 transitions. [2020-10-14 09:28:56,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:28:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 49619 states and 75472 transitions. [2020-10-14 09:28:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 09:28:56,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:56,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:56,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:28:56,046 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1421340712, now seen corresponding path program 1 times [2020-10-14 09:28:56,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:56,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057396158] [2020-10-14 09:28:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:28:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:28:57,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:00,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:01,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:01,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 09:29:01,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:29:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:29:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:01,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:29:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:29:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:29:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:01,283 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:29:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:01,317 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 09:29:01,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057396158] [2020-10-14 09:29:01,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:01,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:29:01,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893636649] [2020-10-14 09:29:01,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:29:01,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:29:01,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:01,319 INFO L87 Difference]: Start difference. First operand 49619 states and 75472 transitions. Second operand 4 states. [2020-10-14 09:29:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:10,363 INFO L93 Difference]: Finished difference Result 136672 states and 209193 transitions. [2020-10-14 09:29:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:29:10,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-14 09:29:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:10,473 INFO L225 Difference]: With dead ends: 136672 [2020-10-14 09:29:10,473 INFO L226 Difference]: Without dead ends: 87701 [2020-10-14 09:29:10,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:29:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87701 states. [2020-10-14 09:29:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87701 to 81203. [2020-10-14 09:29:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81203 states. [2020-10-14 09:29:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81203 states to 81203 states and 124467 transitions. [2020-10-14 09:29:18,652 INFO L78 Accepts]: Start accepts. Automaton has 81203 states and 124467 transitions. Word has length 174 [2020-10-14 09:29:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:18,653 INFO L479 AbstractCegarLoop]: Abstraction has 81203 states and 124467 transitions. [2020-10-14 09:29:18,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:29:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 81203 states and 124467 transitions. [2020-10-14 09:29:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:29:18,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:18,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:29:18,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:29:18,885 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1429905741, now seen corresponding path program 1 times [2020-10-14 09:29:18,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:18,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502534646] [2020-10-14 09:29:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:23,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:23,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 09:29:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:29:24,176 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:29:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:29:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:24,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:29:24,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:29:24,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:29:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:29:24,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:29:24,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:29:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:29:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:29:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:29:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:29:24,224 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 09:29:24,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502534646] [2020-10-14 09:29:24,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:29:24,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:29:24,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255683718] [2020-10-14 09:29:24,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:29:24,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:29:24,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:29:24,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:29:24,226 INFO L87 Difference]: Start difference. First operand 81203 states and 124467 transitions. Second operand 6 states. [2020-10-14 09:29:24,475 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-14 09:29:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:29:39,675 INFO L93 Difference]: Finished difference Result 221201 states and 342160 transitions. [2020-10-14 09:29:39,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:29:39,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-10-14 09:29:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:29:39,914 INFO L225 Difference]: With dead ends: 221201 [2020-10-14 09:29:39,914 INFO L226 Difference]: Without dead ends: 163975 [2020-10-14 09:29:39,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:29:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163975 states. [2020-10-14 09:29:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163975 to 89083. [2020-10-14 09:29:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89083 states. [2020-10-14 09:29:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89083 states to 89083 states and 136963 transitions. [2020-10-14 09:29:50,417 INFO L78 Accepts]: Start accepts. Automaton has 89083 states and 136963 transitions. Word has length 177 [2020-10-14 09:29:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:29:50,417 INFO L479 AbstractCegarLoop]: Abstraction has 89083 states and 136963 transitions. [2020-10-14 09:29:50,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:29:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 89083 states and 136963 transitions. [2020-10-14 09:29:50,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:29:50,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:50,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:29:50,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:29:50,424 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:50,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1627758928, now seen corresponding path program 1 times [2020-10-14 09:29:50,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:50,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111642974] [2020-10-14 09:29:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:50,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking...