/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:33:23,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:33:23,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:33:23,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:33:23,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:33:23,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:33:23,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:33:23,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:33:23,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:33:23,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:33:23,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:33:23,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:33:23,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:33:23,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:33:23,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:33:23,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:33:23,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:33:23,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:33:23,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:33:23,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:33:23,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:33:23,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:33:23,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:33:23,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:33:23,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:33:23,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:33:23,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:33:23,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:33:23,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:33:23,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:33:23,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:33:23,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:33:23,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:33:23,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:33:23,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:33:23,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:33:23,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:33:23,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:33:23,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:33:23,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:33:23,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:33:23,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:33:23,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:33:23,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:33:23,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:33:23,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:33:23,906 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:33:23,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:33:23,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:33:23,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:33:23,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:33:23,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:33:23,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:33:23,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:33:23,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:33:23,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:33:23,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:33:23,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:33:23,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:33:23,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:33:23,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:33:23,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:33:23,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:33:23,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:33:23,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:33:23,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:33:23,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:33:23,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:33:23,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:33:23,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:33:23,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:33:23,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:33:24,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:33:24,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:33:24,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:33:24,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:33:24,225 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:33:24,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-15 03:33:24,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19050530/e3340416600f412f878ab2312a9b827b/FLAG3a46afc04 [2020-10-15 03:33:24,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:33:24,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-15 03:33:24,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19050530/e3340416600f412f878ab2312a9b827b/FLAG3a46afc04 [2020-10-15 03:33:25,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19050530/e3340416600f412f878ab2312a9b827b [2020-10-15 03:33:25,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:33:25,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:33:25,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:25,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:33:25,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:33:25,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768b95b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25, skipping insertion in model container [2020-10-15 03:33:25,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:33:25,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:33:25,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:25,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:33:25,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:25,749 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:33:25,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25 WrapperNode [2020-10-15 03:33:25,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:25,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:33:25,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:33:25,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:33:25,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... [2020-10-15 03:33:25,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:33:25,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:33:25,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:33:25,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:33:25,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:33:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:33:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:33:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:33:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:33:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:33:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:33:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:33:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:33:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:33:26,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:33:26,951 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:33:26,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:26 BoogieIcfgContainer [2020-10-15 03:33:26,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:33:26,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:33:26,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:33:26,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:33:26,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:33:25" (1/3) ... [2020-10-15 03:33:26,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f4b6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:26, skipping insertion in model container [2020-10-15 03:33:26,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:25" (2/3) ... [2020-10-15 03:33:26,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f4b6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:26, skipping insertion in model container [2020-10-15 03:33:26,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:26" (3/3) ... [2020-10-15 03:33:26,965 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-15 03:33:26,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:33:26,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:33:26,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:33:27,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:33:27,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:33:27,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:33:27,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:33:27,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:33:27,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:33:27,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:33:27,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:33:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-15 03:33:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 03:33:27,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:27,058 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] [2020-10-15 03:33:27,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:27,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-15 03:33:27,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:27,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907925394] [2020-10-15 03:33:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:30,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:32,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:32,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 03:33:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:33:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:33:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:32,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:33:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:33:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:33:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:33:32,916 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:33:32,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:32,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:32,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:32,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:32,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:32,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:33:32,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:32,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:33,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907925394] [2020-10-15 03:33:33,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:33,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:33:33,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820152548] [2020-10-15 03:33:33,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:33:33,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:33,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:33:33,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:33:33,066 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 10 states. [2020-10-15 03:33:33,526 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-15 03:33:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:36,053 INFO L93 Difference]: Finished difference Result 1478 states and 2361 transitions. [2020-10-15 03:33:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:33:36,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-10-15 03:33:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:36,090 INFO L225 Difference]: With dead ends: 1478 [2020-10-15 03:33:36,091 INFO L226 Difference]: Without dead ends: 1337 [2020-10-15 03:33:36,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:33:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-15 03:33:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 308. [2020-10-15 03:33:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-15 03:33:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 441 transitions. [2020-10-15 03:33:36,188 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 441 transitions. Word has length 112 [2020-10-15 03:33:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:36,189 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 441 transitions. [2020-10-15 03:33:36,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:33:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 441 transitions. [2020-10-15 03:33:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:33:36,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:36,193 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] [2020-10-15 03:33:36,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:33:36,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-15 03:33:36,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:36,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068805018] [2020-10-15 03:33:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:38,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:41,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:41,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:33:41,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:33:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:33:41,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:41,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:33:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:33:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:33:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:41,535 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:33:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:41,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:33:41,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:41,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:41,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068805018] [2020-10-15 03:33:41,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:41,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:33:41,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340644988] [2020-10-15 03:33:41,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:33:41,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:33:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:33:41,601 INFO L87 Difference]: Start difference. First operand 308 states and 441 transitions. Second operand 10 states. [2020-10-15 03:33:41,894 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:33:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:43,576 INFO L93 Difference]: Finished difference Result 1945 states and 3017 transitions. [2020-10-15 03:33:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:33:43,578 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:33:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:43,588 INFO L225 Difference]: With dead ends: 1945 [2020-10-15 03:33:43,588 INFO L226 Difference]: Without dead ends: 1785 [2020-10-15 03:33:43,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:33:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-10-15 03:33:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 562. [2020-10-15 03:33:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-15 03:33:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 843 transitions. [2020-10-15 03:33:43,650 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 843 transitions. Word has length 114 [2020-10-15 03:33:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:43,651 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 843 transitions. [2020-10-15 03:33:43,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:33:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 843 transitions. [2020-10-15 03:33:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:33:43,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:43,654 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] [2020-10-15 03:33:43,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:33:43,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash -772514959, now seen corresponding path program 1 times [2020-10-15 03:33:43,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:43,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638057846] [2020-10-15 03:33:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:33:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:33:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:33:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:48,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:33:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:33:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:33:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:48,994 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:33:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:49,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:49,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:49,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:33:49,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:49,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:49,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:49,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638057846] [2020-10-15 03:33:49,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:49,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:33:49,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123832709] [2020-10-15 03:33:49,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:33:49,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:49,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:33:49,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:33:49,056 INFO L87 Difference]: Start difference. First operand 562 states and 843 transitions. Second operand 10 states. [2020-10-15 03:33:49,330 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:33:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:50,814 INFO L93 Difference]: Finished difference Result 2376 states and 3690 transitions. [2020-10-15 03:33:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:33:50,815 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:33:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:50,840 INFO L225 Difference]: With dead ends: 2376 [2020-10-15 03:33:50,840 INFO L226 Difference]: Without dead ends: 2141 [2020-10-15 03:33:50,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:33:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-10-15 03:33:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 810. [2020-10-15 03:33:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-15 03:33:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1236 transitions. [2020-10-15 03:33:50,948 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1236 transitions. Word has length 114 [2020-10-15 03:33:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:50,950 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1236 transitions. [2020-10-15 03:33:50,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:33:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1236 transitions. [2020-10-15 03:33:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:33:50,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:50,956 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] [2020-10-15 03:33:50,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:33:50,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:50,958 INFO L82 PathProgramCache]: Analyzing trace with hash 571290459, now seen corresponding path program 1 times [2020-10-15 03:33:50,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:50,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140174612] [2020-10-15 03:33:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:56,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:33:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:33:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:56,449 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:33:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:33:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:56,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:56,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140174612] [2020-10-15 03:33:56,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:56,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:33:56,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598444456] [2020-10-15 03:33:56,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:33:56,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:56,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:33:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:33:56,556 INFO L87 Difference]: Start difference. First operand 810 states and 1236 transitions. Second operand 10 states. [2020-10-15 03:33:56,945 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:33:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:58,109 INFO L93 Difference]: Finished difference Result 2554 states and 3970 transitions. [2020-10-15 03:33:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:33:58,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:33:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:58,125 INFO L225 Difference]: With dead ends: 2554 [2020-10-15 03:33:58,125 INFO L226 Difference]: Without dead ends: 2319 [2020-10-15 03:33:58,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:33:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-15 03:33:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 969. [2020-10-15 03:33:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-15 03:33:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1488 transitions. [2020-10-15 03:33:58,208 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1488 transitions. Word has length 114 [2020-10-15 03:33:58,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:58,208 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1488 transitions. [2020-10-15 03:33:58,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:33:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1488 transitions. [2020-10-15 03:33:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:33:58,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:58,210 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] [2020-10-15 03:33:58,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:33:58,211 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1627098138, now seen corresponding path program 1 times [2020-10-15 03:33:58,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:58,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560503388] [2020-10-15 03:33:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:03,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:34:03,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:34:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:34:03,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:03,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:03,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:34:03,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:34:03,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:34:03,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:03,682 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:03,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:34:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:03,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:03,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560503388] [2020-10-15 03:34:03,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:03,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:34:03,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959073914] [2020-10-15 03:34:03,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:34:03,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:03,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:34:03,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:34:03,791 INFO L87 Difference]: Start difference. First operand 969 states and 1488 transitions. Second operand 10 states. [2020-10-15 03:34:04,174 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:34:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:05,596 INFO L93 Difference]: Finished difference Result 3230 states and 5046 transitions. [2020-10-15 03:34:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:34:05,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:34:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:05,612 INFO L225 Difference]: With dead ends: 3230 [2020-10-15 03:34:05,612 INFO L226 Difference]: Without dead ends: 2442 [2020-10-15 03:34:05,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:34:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-10-15 03:34:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 969. [2020-10-15 03:34:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-15 03:34:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1483 transitions. [2020-10-15 03:34:05,702 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1483 transitions. Word has length 114 [2020-10-15 03:34:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:05,702 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1483 transitions. [2020-10-15 03:34:05,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:34:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1483 transitions. [2020-10-15 03:34:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:34:05,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:05,704 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] [2020-10-15 03:34:05,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:34:05,704 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1385880411, now seen corresponding path program 1 times [2020-10-15 03:34:05,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:05,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343905988] [2020-10-15 03:34:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:10,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:34:10,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:34:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:34:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:10,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:34:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:11,008 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:11,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:11,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:34:11,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:11,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:11,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343905988] [2020-10-15 03:34:11,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:11,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:11,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619298479] [2020-10-15 03:34:11,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:11,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:11,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:11,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:11,069 INFO L87 Difference]: Start difference. First operand 969 states and 1483 transitions. Second operand 6 states. [2020-10-15 03:34:11,309 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 03:34:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:12,239 INFO L93 Difference]: Finished difference Result 2721 states and 4232 transitions. [2020-10-15 03:34:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:12,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-15 03:34:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:12,247 INFO L225 Difference]: With dead ends: 2721 [2020-10-15 03:34:12,247 INFO L226 Difference]: Without dead ends: 1817 [2020-10-15 03:34:12,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:34:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2020-10-15 03:34:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1815. [2020-10-15 03:34:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2020-10-15 03:34:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2804 transitions. [2020-10-15 03:34:12,395 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2804 transitions. Word has length 114 [2020-10-15 03:34:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:12,396 INFO L479 AbstractCegarLoop]: Abstraction has 1815 states and 2804 transitions. [2020-10-15 03:34:12,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2804 transitions. [2020-10-15 03:34:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:34:12,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:12,398 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] [2020-10-15 03:34:12,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:34:12,398 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1191463456, now seen corresponding path program 1 times [2020-10-15 03:34:12,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:12,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617162190] [2020-10-15 03:34:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:17,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:17,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:34:17,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:34:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:34:17,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:17,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:34:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:17,686 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:17,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:17,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:34:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:17,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617162190] [2020-10-15 03:34:17,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:17,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:17,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188433079] [2020-10-15 03:34:17,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:17,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:17,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:17,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:17,745 INFO L87 Difference]: Start difference. First operand 1815 states and 2804 transitions. Second operand 6 states. [2020-10-15 03:34:17,981 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:34:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:19,006 INFO L93 Difference]: Finished difference Result 5147 states and 8018 transitions. [2020-10-15 03:34:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:19,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-15 03:34:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:19,022 INFO L225 Difference]: With dead ends: 5147 [2020-10-15 03:34:19,022 INFO L226 Difference]: Without dead ends: 3409 [2020-10-15 03:34:19,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2020-10-15 03:34:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3407. [2020-10-15 03:34:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2020-10-15 03:34:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 5273 transitions. [2020-10-15 03:34:19,358 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 5273 transitions. Word has length 115 [2020-10-15 03:34:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:19,358 INFO L479 AbstractCegarLoop]: Abstraction has 3407 states and 5273 transitions. [2020-10-15 03:34:19,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 5273 transitions. [2020-10-15 03:34:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 03:34:19,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:19,361 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] [2020-10-15 03:34:19,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:34:19,362 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:19,362 INFO L82 PathProgramCache]: Analyzing trace with hash -949948788, now seen corresponding path program 1 times [2020-10-15 03:34:19,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:19,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396655949] [2020-10-15 03:34:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 03:34:24,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:34:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:34:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:24,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:34:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:24,646 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:24,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:24,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:24,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:24,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:24,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:34:24,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:24,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:24,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:24,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396655949] [2020-10-15 03:34:24,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:24,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:24,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674726111] [2020-10-15 03:34:24,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:24,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:24,715 INFO L87 Difference]: Start difference. First operand 3407 states and 5273 transitions. Second operand 6 states. [2020-10-15 03:34:24,951 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:34:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:26,111 INFO L93 Difference]: Finished difference Result 9815 states and 15250 transitions. [2020-10-15 03:34:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:26,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-15 03:34:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:26,136 INFO L225 Difference]: With dead ends: 9815 [2020-10-15 03:34:26,136 INFO L226 Difference]: Without dead ends: 6489 [2020-10-15 03:34:26,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:26,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6489 states. [2020-10-15 03:34:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6489 to 6487. [2020-10-15 03:34:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6487 states. [2020-10-15 03:34:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 10020 transitions. [2020-10-15 03:34:26,617 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 10020 transitions. Word has length 116 [2020-10-15 03:34:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:26,617 INFO L479 AbstractCegarLoop]: Abstraction has 6487 states and 10020 transitions. [2020-10-15 03:34:26,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 10020 transitions. [2020-10-15 03:34:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 03:34:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:26,620 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] [2020-10-15 03:34:26,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:34:26,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash 152600911, now seen corresponding path program 1 times [2020-10-15 03:34:26,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:26,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639475761] [2020-10-15 03:34:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:29,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:29,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 03:34:31,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:34:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:34:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 03:34:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:31,889 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:31,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:31,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:34:31,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:31,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:31,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:31,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:31,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:31,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639475761] [2020-10-15 03:34:31,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:31,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:31,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348395365] [2020-10-15 03:34:31,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:31,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:31,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:31,928 INFO L87 Difference]: Start difference. First operand 6487 states and 10020 transitions. Second operand 6 states. [2020-10-15 03:34:32,162 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:34:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:33,799 INFO L93 Difference]: Finished difference Result 18979 states and 29376 transitions. [2020-10-15 03:34:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:33,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-15 03:34:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:33,837 INFO L225 Difference]: With dead ends: 18979 [2020-10-15 03:34:33,837 INFO L226 Difference]: Without dead ends: 12577 [2020-10-15 03:34:33,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12577 states. [2020-10-15 03:34:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12577 to 12575. [2020-10-15 03:34:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12575 states. [2020-10-15 03:34:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12575 states to 12575 states and 19363 transitions. [2020-10-15 03:34:34,899 INFO L78 Accepts]: Start accepts. Automaton has 12575 states and 19363 transitions. Word has length 117 [2020-10-15 03:34:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:34,899 INFO L479 AbstractCegarLoop]: Abstraction has 12575 states and 19363 transitions. [2020-10-15 03:34:34,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:34:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 12575 states and 19363 transitions. [2020-10-15 03:34:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:34:34,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:34,906 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] [2020-10-15 03:34:34,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:34:34,906 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1358728419, now seen corresponding path program 1 times [2020-10-15 03:34:34,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:34,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754734263] [2020-10-15 03:34:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:39,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:34:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:40,295 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:40,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:40,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754734263] [2020-10-15 03:34:40,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:40,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:34:40,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591570484] [2020-10-15 03:34:40,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:34:40,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:34:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:34:40,333 INFO L87 Difference]: Start difference. First operand 12575 states and 19363 transitions. Second operand 8 states. [2020-10-15 03:34:40,609 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-15 03:34:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:43,673 INFO L93 Difference]: Finished difference Result 31161 states and 48033 transitions. [2020-10-15 03:34:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:34:43,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-15 03:34:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:43,712 INFO L225 Difference]: With dead ends: 31161 [2020-10-15 03:34:43,712 INFO L226 Difference]: Without dead ends: 18745 [2020-10-15 03:34:43,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:34:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18745 states. [2020-10-15 03:34:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18745 to 12575. [2020-10-15 03:34:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12575 states. [2020-10-15 03:34:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12575 states to 12575 states and 19362 transitions. [2020-10-15 03:34:45,122 INFO L78 Accepts]: Start accepts. Automaton has 12575 states and 19362 transitions. Word has length 118 [2020-10-15 03:34:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:45,123 INFO L479 AbstractCegarLoop]: Abstraction has 12575 states and 19362 transitions. [2020-10-15 03:34:45,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:34:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12575 states and 19362 transitions. [2020-10-15 03:34:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:34:45,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:45,125 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] [2020-10-15 03:34:45,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:34:45,126 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:45,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:45,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1634225351, now seen corresponding path program 1 times [2020-10-15 03:34:45,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:45,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552520612] [2020-10-15 03:34:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:50,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:34:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:34:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:34:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:50,400 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:34:50,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552520612] [2020-10-15 03:34:50,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:50,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:50,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718553427] [2020-10-15 03:34:50,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:34:50,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:34:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:34:50,446 INFO L87 Difference]: Start difference. First operand 12575 states and 19362 transitions. Second operand 5 states. [2020-10-15 03:34:50,695 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 03:34:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:53,801 INFO L93 Difference]: Finished difference Result 36243 states and 55764 transitions. [2020-10-15 03:34:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:34:53,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:34:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:53,844 INFO L225 Difference]: With dead ends: 36243 [2020-10-15 03:34:53,845 INFO L226 Difference]: Without dead ends: 23985 [2020-10-15 03:34:53,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23985 states. [2020-10-15 03:34:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23985 to 23983. [2020-10-15 03:34:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23983 states. [2020-10-15 03:34:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 36610 transitions. [2020-10-15 03:34:56,297 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 36610 transitions. Word has length 119 [2020-10-15 03:34:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:56,297 INFO L479 AbstractCegarLoop]: Abstraction has 23983 states and 36610 transitions. [2020-10-15 03:34:56,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:34:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 36610 transitions. [2020-10-15 03:34:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:34:56,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:56,299 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] [2020-10-15 03:34:56,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:34:56,299 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:56,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1798067827, now seen corresponding path program 1 times [2020-10-15 03:34:56,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:56,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189187608] [2020-10-15 03:34:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:35:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:35:01,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:01,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:35:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:35:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:35:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:01,755 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:01,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:01,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:35:01,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:01,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:01,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189187608] [2020-10-15 03:35:01,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:01,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:35:01,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189670836] [2020-10-15 03:35:01,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:35:01,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:01,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:35:01,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:01,795 INFO L87 Difference]: Start difference. First operand 23983 states and 36610 transitions. Second operand 9 states. [2020-10-15 03:35:02,056 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 03:35:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:07,871 INFO L93 Difference]: Finished difference Result 60064 states and 91544 transitions. [2020-10-15 03:35:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:35:07,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-10-15 03:35:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:07,916 INFO L225 Difference]: With dead ends: 60064 [2020-10-15 03:35:07,917 INFO L226 Difference]: Without dead ends: 36217 [2020-10-15 03:35:07,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:35:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36217 states. [2020-10-15 03:35:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36217 to 23983. [2020-10-15 03:35:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23983 states. [2020-10-15 03:35:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 36605 transitions. [2020-10-15 03:35:11,003 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 36605 transitions. Word has length 119 [2020-10-15 03:35:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:11,004 INFO L479 AbstractCegarLoop]: Abstraction has 23983 states and 36605 transitions. [2020-10-15 03:35:11,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:35:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 36605 transitions. [2020-10-15 03:35:11,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:35:11,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:11,006 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] [2020-10-15 03:35:11,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:35:11,006 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:11,007 INFO L82 PathProgramCache]: Analyzing trace with hash 478938304, now seen corresponding path program 1 times [2020-10-15 03:35:11,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:11,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451976481] [2020-10-15 03:35:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:16,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:35:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:16,264 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:16,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:16,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:16,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:35:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:16,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:16,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451976481] [2020-10-15 03:35:16,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:16,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:16,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360193028] [2020-10-15 03:35:16,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:16,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:16,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:16,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:16,297 INFO L87 Difference]: Start difference. First operand 23983 states and 36605 transitions. Second operand 6 states. [2020-10-15 03:35:16,530 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 03:35:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:22,014 INFO L93 Difference]: Finished difference Result 41069 states and 62696 transitions. [2020-10-15 03:35:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:22,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-15 03:35:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:22,046 INFO L225 Difference]: With dead ends: 41069 [2020-10-15 03:35:22,047 INFO L226 Difference]: Without dead ends: 34043 [2020-10-15 03:35:22,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34043 states. [2020-10-15 03:35:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34043 to 30095. [2020-10-15 03:35:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30095 states. [2020-10-15 03:35:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30095 states to 30095 states and 46085 transitions. [2020-10-15 03:35:25,910 INFO L78 Accepts]: Start accepts. Automaton has 30095 states and 46085 transitions. Word has length 119 [2020-10-15 03:35:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:25,910 INFO L479 AbstractCegarLoop]: Abstraction has 30095 states and 46085 transitions. [2020-10-15 03:35:25,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 30095 states and 46085 transitions. [2020-10-15 03:35:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:35:25,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:25,913 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] [2020-10-15 03:35:25,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:35:25,914 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:25,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:25,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2050371772, now seen corresponding path program 1 times [2020-10-15 03:35:25,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:25,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884282039] [2020-10-15 03:35:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:30,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:35:30,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:35:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:31,161 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:31,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884282039] [2020-10-15 03:35:31,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:31,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:31,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701751861] [2020-10-15 03:35:31,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:31,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:31,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:31,189 INFO L87 Difference]: Start difference. First operand 30095 states and 46085 transitions. Second operand 6 states. [2020-10-15 03:35:31,410 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 03:35:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:48,628 INFO L93 Difference]: Finished difference Result 160125 states and 245632 transitions. [2020-10-15 03:35:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:35:48,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-15 03:35:48,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:48,759 INFO L225 Difference]: With dead ends: 160125 [2020-10-15 03:35:48,760 INFO L226 Difference]: Without dead ends: 130279 [2020-10-15 03:35:48,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130279 states. [2020-10-15 03:36:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130279 to 100235. [2020-10-15 03:36:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100235 states. [2020-10-15 03:36:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100235 states to 100235 states and 153147 transitions. [2020-10-15 03:36:03,260 INFO L78 Accepts]: Start accepts. Automaton has 100235 states and 153147 transitions. Word has length 120 [2020-10-15 03:36:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:03,260 INFO L479 AbstractCegarLoop]: Abstraction has 100235 states and 153147 transitions. [2020-10-15 03:36:03,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 100235 states and 153147 transitions. [2020-10-15 03:36:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:36:03,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:03,266 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] [2020-10-15 03:36:03,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:36:03,266 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1603614307, now seen corresponding path program 1 times [2020-10-15 03:36:03,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:03,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127258879] [2020-10-15 03:36:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:36:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6167 [2020-10-15 03:36:09,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:09,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:36:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:36:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:36:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:09,736 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:09,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:09,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:09,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127258879] [2020-10-15 03:36:09,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:09,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:36:09,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722025735] [2020-10-15 03:36:09,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:36:09,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:09,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:36:09,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:36:09,775 INFO L87 Difference]: Start difference. First operand 100235 states and 153147 transitions. Second operand 10 states. [2020-10-15 03:36:10,054 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:48,406 INFO L93 Difference]: Finished difference Result 288319 states and 439812 transitions. [2020-10-15 03:36:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:36:48,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2020-10-15 03:36:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:48,686 INFO L225 Difference]: With dead ends: 288319 [2020-10-15 03:36:48,687 INFO L226 Difference]: Without dead ends: 260269 [2020-10-15 03:36:48,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:36:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260269 states. [2020-10-15 03:37:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260269 to 118107. [2020-10-15 03:37:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118107 states. [2020-10-15 03:37:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118107 states to 118107 states and 180459 transitions. [2020-10-15 03:37:05,440 INFO L78 Accepts]: Start accepts. Automaton has 118107 states and 180459 transitions. Word has length 120 [2020-10-15 03:37:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:05,441 INFO L479 AbstractCegarLoop]: Abstraction has 118107 states and 180459 transitions. [2020-10-15 03:37:05,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:37:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 118107 states and 180459 transitions. [2020-10-15 03:37:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:05,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:05,446 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] [2020-10-15 03:37:05,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:37:05,446 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:05,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2104765140, now seen corresponding path program 1 times [2020-10-15 03:37:05,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:05,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804587744] [2020-10-15 03:37:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:10,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:37:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:10,707 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:37:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:37:10,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:10,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:10,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804587744] [2020-10-15 03:37:10,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:10,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:37:10,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653652979] [2020-10-15 03:37:10,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:10,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:10,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:10,745 INFO L87 Difference]: Start difference. First operand 118107 states and 180459 transitions. Second operand 6 states. [2020-10-15 03:37:10,986 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 185