/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/loops-crafted-1/theatreSquare.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:07:11,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:07:11,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:07:11,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:07:11,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:07:11,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:07:11,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:07:11,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:07:11,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:07:11,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:07:11,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:07:11,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:07:11,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:07:11,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:07:11,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:07:11,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:07:11,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:07:11,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:07:11,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:07:11,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:07:11,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:07:11,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:07:11,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:07:11,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:07:11,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:07:11,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:07:11,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:07:11,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:07:11,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:07:11,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:07:11,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:07:11,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:07:11,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:07:11,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:07:11,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:07:11,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:07:11,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:07:11,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:07:11,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:07:11,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:07:11,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:07:11,953 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 00:07:11,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:07:11,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:07:11,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:07:11,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:07:11,976 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:07:11,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:07:11,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:07:11,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:07:11,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:07:11,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:07:11,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:07:11,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:07:11,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:07:11,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:07:11,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:07:11,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:07:11,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:07:11,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:07:11,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:07:11,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:07:11,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:07:11,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:07:11,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:07:11,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:07:11,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:07:11,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:07:11,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:07:11,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:07:11,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:07:11,980 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 00:07:12,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:07:12,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:07:12,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:07:12,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:07:12,309 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:07:12,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2020-10-15 00:07:12,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8e1bdc4e/820bd5a6962e410ba8403e7829e2ae40/FLAG086b9f814 [2020-10-15 00:07:12,799 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:07:12,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2020-10-15 00:07:12,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8e1bdc4e/820bd5a6962e410ba8403e7829e2ae40/FLAG086b9f814 [2020-10-15 00:07:13,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8e1bdc4e/820bd5a6962e410ba8403e7829e2ae40 [2020-10-15 00:07:13,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:07:13,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:07:13,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:07:13,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:07:13,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:07:13,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13, skipping insertion in model container [2020-10-15 00:07:13,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:07:13,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:07:13,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:07:13,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:07:13,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:07:13,513 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:07:13,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13 WrapperNode [2020-10-15 00:07:13,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:07:13,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:07:13,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:07:13,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:07:13,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (1/1) ... [2020-10-15 00:07:13,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:07:13,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:07:13,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:07:13,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:07:13,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (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 00:07:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:07:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:07:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:07:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure correct_version [2020-10-15 00:07:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure student_version [2020-10-15 00:07:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:07:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:07:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:07:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:07:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure correct_version [2020-10-15 00:07:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure student_version [2020-10-15 00:07:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:07:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:07:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:07:13,938 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:07:13,939 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-15 00:07:13,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:07:13 BoogieIcfgContainer [2020-10-15 00:07:13,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:07:13,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:07:13,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:07:13,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:07:13,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:07:13" (1/3) ... [2020-10-15 00:07:13,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3817f6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:07:13, skipping insertion in model container [2020-10-15 00:07:13,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:13" (2/3) ... [2020-10-15 00:07:13,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3817f6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:07:13, skipping insertion in model container [2020-10-15 00:07:13,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:07:13" (3/3) ... [2020-10-15 00:07:13,953 INFO L109 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2020-10-15 00:07:13,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:07:13,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:07:13,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:07:14,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:07:14,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:07:14,018 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:07:14,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:07:14,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:07:14,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:07:14,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:07:14,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:07:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-15 00:07:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:07:14,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:14,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:14,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:14,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash -962826499, now seen corresponding path program 1 times [2020-10-15 00:07:14,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:14,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185313589] [2020-10-15 00:07:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:14,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:14,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:14,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-15 00:07:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:14,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:07:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:07:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:14,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:14,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:14,478 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 00:07:14,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185313589] [2020-10-15 00:07:14,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:14,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:07:14,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369116618] [2020-10-15 00:07:14,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:14,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:14,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:14,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:14,500 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-15 00:07:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:14,580 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-10-15 00:07:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:07:14,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 00:07:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:14,590 INFO L225 Difference]: With dead ends: 75 [2020-10-15 00:07:14,590 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 00:07:14,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 00:07:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-15 00:07:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 00:07:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-15 00:07:14,637 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 10 [2020-10-15 00:07:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:14,638 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-15 00:07:14,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-15 00:07:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:07:14,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:14,640 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] [2020-10-15 00:07:14,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:07:14,640 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:14,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:14,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1083365074, now seen corresponding path program 1 times [2020-10-15 00:07:14,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:14,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097843212] [2020-10-15 00:07:14,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:14,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:07:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-15 00:07:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:16,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:16,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:16,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:16,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:16,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:16,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:16,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:16,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:07:16,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:16,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:16,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:07:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:16,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:07:16,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:07:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:16,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:16,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097843212] [2020-10-15 00:07:16,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:16,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:07:16,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222083596] [2020-10-15 00:07:16,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:16,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:16,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:16,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:16,237 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-15 00:07:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:16,280 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-15 00:07:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:16,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-15 00:07:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:16,283 INFO L225 Difference]: With dead ends: 43 [2020-10-15 00:07:16,284 INFO L226 Difference]: Without dead ends: 32 [2020-10-15 00:07:16,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-15 00:07:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-15 00:07:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-15 00:07:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-15 00:07:16,298 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 30 [2020-10-15 00:07:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:16,299 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-15 00:07:16,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-15 00:07:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:07:16,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:16,301 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] [2020-10-15 00:07:16,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:07:16,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:16,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:16,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1481509601, now seen corresponding path program 1 times [2020-10-15 00:07:16,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:16,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213006172] [2020-10-15 00:07:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 00:07:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-10-15 00:07:17,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 00:07:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:07:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:17,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:17,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:07:17,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:07:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:07:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:17,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:07:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:07:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:07:17,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 00:07:17,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213006172] [2020-10-15 00:07:17,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:17,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:07:17,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547388571] [2020-10-15 00:07:17,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:07:17,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:07:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:07:17,704 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 12 states. [2020-10-15 00:07:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:17,857 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-15 00:07:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:07:17,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-15 00:07:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:17,863 INFO L225 Difference]: With dead ends: 50 [2020-10-15 00:07:17,863 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:07:17,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:07:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:07:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-15 00:07:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-15 00:07:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-15 00:07:17,879 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 31 [2020-10-15 00:07:17,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:17,879 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-15 00:07:17,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:07:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-15 00:07:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 00:07:17,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:17,882 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] [2020-10-15 00:07:17,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:07:17,883 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash -351960294, now seen corresponding path program 1 times [2020-10-15 00:07:17,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:17,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728711081] [2020-10-15 00:07:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:18,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:07:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-15 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:18,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:18,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:18,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:18,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:18,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:07:18,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:07:18,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:18,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:18,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 00:07:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:18,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:07:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 00:07:18,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:18,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:18,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728711081] [2020-10-15 00:07:18,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:18,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:07:18,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379791100] [2020-10-15 00:07:18,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:18,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:18,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:18,743 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-15 00:07:18,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:18,784 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-15 00:07:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:18,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-15 00:07:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:18,787 INFO L225 Difference]: With dead ends: 60 [2020-10-15 00:07:18,787 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:07:18,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:07:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-15 00:07:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 00:07:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-15 00:07:18,808 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 32 [2020-10-15 00:07:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:18,811 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-15 00:07:18,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-15 00:07:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 00:07:18,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:18,813 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] [2020-10-15 00:07:18,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:07:18,813 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:18,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1555749302, now seen corresponding path program 1 times [2020-10-15 00:07:18,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238792475] [2020-10-15 00:07:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 00:07:19,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:07:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-15 00:07:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:19,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:19,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:19,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:07:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:19,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:19,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:07:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 00:07:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:19,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 00:07:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:07:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:07:20,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:20,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238792475] [2020-10-15 00:07:20,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:20,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:07:20,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350038458] [2020-10-15 00:07:20,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:07:20,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:20,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:07:20,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:07:20,107 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 7 states. [2020-10-15 00:07:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:20,187 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2020-10-15 00:07:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:07:20,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-15 00:07:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:20,189 INFO L225 Difference]: With dead ends: 63 [2020-10-15 00:07:20,189 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:07:20,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:07:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-15 00:07:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-15 00:07:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-15 00:07:20,198 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2020-10-15 00:07:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:20,199 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-15 00:07:20,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:07:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-15 00:07:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 00:07:20,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:20,201 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] [2020-10-15 00:07:20,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:07:20,201 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash -359116350, now seen corresponding path program 1 times [2020-10-15 00:07:20,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:20,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570147902] [2020-10-15 00:07:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:07:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-15 00:07:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:20,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:20,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:20,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:07:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:07:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:07:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:07:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:07:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 00:07:21,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570147902] [2020-10-15 00:07:21,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:21,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:07:21,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806424996] [2020-10-15 00:07:21,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:07:21,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:21,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:07:21,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:07:21,147 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 7 states. [2020-10-15 00:07:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:21,241 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-10-15 00:07:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:07:21,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-15 00:07:21,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:21,243 INFO L225 Difference]: With dead ends: 66 [2020-10-15 00:07:21,243 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 00:07:21,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:21,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 00:07:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 00:07:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 00:07:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-15 00:07:21,264 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 34 [2020-10-15 00:07:21,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:21,265 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-15 00:07:21,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:07:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-15 00:07:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 00:07:21,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:21,267 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] [2020-10-15 00:07:21,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:07:21,269 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:21,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:21,270 INFO L82 PathProgramCache]: Analyzing trace with hash -398229959, now seen corresponding path program 1 times [2020-10-15 00:07:21,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:21,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491194002] [2020-10-15 00:07:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:07:21,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 00:07:21,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 00:07:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:21,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:21,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:21,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:07:21,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:07:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:07:21,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:07:21,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:21,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:21,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491194002] [2020-10-15 00:07:21,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:21,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:07:21,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182836507] [2020-10-15 00:07:21,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:21,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:21,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:21,415 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 5 states. [2020-10-15 00:07:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:21,450 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-15 00:07:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:21,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-15 00:07:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:21,452 INFO L225 Difference]: With dead ends: 51 [2020-10-15 00:07:21,452 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 00:07:21,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 00:07:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-15 00:07:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 00:07:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-15 00:07:21,462 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 35 [2020-10-15 00:07:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:21,462 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-15 00:07:21,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-15 00:07:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 00:07:21,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:21,465 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] [2020-10-15 00:07:21,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:07:21,466 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash -759720898, now seen corresponding path program 1 times [2020-10-15 00:07:21,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:21,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154224107] [2020-10-15 00:07:21,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:07:21,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:07:21,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:21,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:21,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:07:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:07:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:07:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:21,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:07:21,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:21,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154224107] [2020-10-15 00:07:21,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:21,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:07:21,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391665003] [2020-10-15 00:07:21,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:21,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:21,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:21,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:21,602 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-10-15 00:07:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:21,629 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-15 00:07:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:21,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-15 00:07:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:21,631 INFO L225 Difference]: With dead ends: 59 [2020-10-15 00:07:21,631 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 00:07:21,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 00:07:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-15 00:07:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 00:07:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-15 00:07:21,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 35 [2020-10-15 00:07:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:21,642 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-15 00:07:21,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-15 00:07:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:07:21,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:21,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:21,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:07:21,646 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:21,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1421856711, now seen corresponding path program 1 times [2020-10-15 00:07:21,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:21,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8273806] [2020-10-15 00:07:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:07:21,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-15 00:07:21,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:07:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:07:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:21,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:21,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:21,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:07:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:07:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:22,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:07:22,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:22,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8273806] [2020-10-15 00:07:22,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:22,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:07:22,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232259467] [2020-10-15 00:07:22,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:07:22,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:22,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:07:22,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:07:22,276 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 18 states. [2020-10-15 00:07:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:22,653 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-10-15 00:07:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:07:22,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-10-15 00:07:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:22,655 INFO L225 Difference]: With dead ends: 69 [2020-10-15 00:07:22,655 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:07:22,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:07:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:07:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-10-15 00:07:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 00:07:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-15 00:07:22,664 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 36 [2020-10-15 00:07:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:22,664 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-15 00:07:22,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:07:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-15 00:07:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:22,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:22,666 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:22,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:07:22,666 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash -473230434, now seen corresponding path program 2 times [2020-10-15 00:07:22,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:22,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793595170] [2020-10-15 00:07:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:07:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:07:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:22,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:22,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:22,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:07:22,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:07:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:07:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:22,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793595170] [2020-10-15 00:07:22,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:22,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:07:22,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763458050] [2020-10-15 00:07:22,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:07:22,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:22,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:07:22,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:22,825 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 6 states. [2020-10-15 00:07:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:22,865 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2020-10-15 00:07:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:07:22,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-15 00:07:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:22,867 INFO L225 Difference]: With dead ends: 99 [2020-10-15 00:07:22,867 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 00:07:22,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 00:07:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2020-10-15 00:07:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 00:07:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-15 00:07:22,877 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 37 [2020-10-15 00:07:22,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:22,877 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-15 00:07:22,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:07:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-15 00:07:22,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:22,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:22,879 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:22,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:07:22,879 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:22,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1205452345, now seen corresponding path program 3 times [2020-10-15 00:07:22,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:22,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552473928] [2020-10-15 00:07:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:22,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 00:07:22,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 00:07:22,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:07:22,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:22,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:22,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:22,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:07:22,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:22,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:22,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:07:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:07:23,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:07:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:23,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552473928] [2020-10-15 00:07:23,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:23,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:07:23,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889351026] [2020-10-15 00:07:23,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:07:23,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:23,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:07:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:07:23,071 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 6 states. [2020-10-15 00:07:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:23,115 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-10-15 00:07:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:07:23,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-15 00:07:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:23,118 INFO L225 Difference]: With dead ends: 89 [2020-10-15 00:07:23,119 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 00:07:23,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 00:07:23,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-10-15 00:07:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 00:07:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-10-15 00:07:23,134 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 37 [2020-10-15 00:07:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:23,134 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-10-15 00:07:23,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:07:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-10-15 00:07:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:23,138 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:23,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:07:23,138 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:23,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1163156936, now seen corresponding path program 4 times [2020-10-15 00:07:23,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:23,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900720877] [2020-10-15 00:07:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:23,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 00:07:23,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:07:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:23,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:07:23,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:07:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:07:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:23,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900720877] [2020-10-15 00:07:23,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:23,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:07:23,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481261682] [2020-10-15 00:07:23,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:07:23,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:07:23,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:07:23,446 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand 9 states. [2020-10-15 00:07:23,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:23,576 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2020-10-15 00:07:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:07:23,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-15 00:07:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:23,582 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:07:23,582 INFO L226 Difference]: Without dead ends: 85 [2020-10-15 00:07:23,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:07:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-15 00:07:23,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-15 00:07:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 00:07:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-10-15 00:07:23,603 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 37 [2020-10-15 00:07:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:23,603 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-10-15 00:07:23,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:07:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-10-15 00:07:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:23,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:23,606 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:23,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:07:23,606 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:23,607 INFO L82 PathProgramCache]: Analyzing trace with hash -229775873, now seen corresponding path program 5 times [2020-10-15 00:07:23,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:23,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707651946] [2020-10-15 00:07:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:23,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 00:07:23,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:07:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:23,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:23,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 00:07:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:23,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:07:23,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:23,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:23,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707651946] [2020-10-15 00:07:23,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:23,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:07:23,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963662648] [2020-10-15 00:07:23,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:07:23,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:23,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:07:23,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:07:23,951 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 9 states. [2020-10-15 00:07:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:24,063 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-10-15 00:07:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:07:24,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-15 00:07:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:24,065 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:07:24,065 INFO L226 Difference]: Without dead ends: 85 [2020-10-15 00:07:24,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:07:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-15 00:07:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-15 00:07:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 00:07:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-10-15 00:07:24,080 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 37 [2020-10-15 00:07:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:24,081 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-10-15 00:07:24,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:07:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-10-15 00:07:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:07:24,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:24,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:24,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:07:24,082 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:24,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1490805387, now seen corresponding path program 6 times [2020-10-15 00:07:24,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:24,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125814652] [2020-10-15 00:07:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:07:24,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 00:07:24,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:07:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:24,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:07:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:07:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 00:07:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:07:24,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125814652] [2020-10-15 00:07:24,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:24,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:07:24,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002802096] [2020-10-15 00:07:24,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:07:24,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:24,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:07:24,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:07:24,412 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 9 states. [2020-10-15 00:07:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:24,536 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-10-15 00:07:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:07:24,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-15 00:07:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:24,538 INFO L225 Difference]: With dead ends: 107 [2020-10-15 00:07:24,538 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 00:07:24,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 00:07:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2020-10-15 00:07:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 00:07:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2020-10-15 00:07:24,555 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 38 [2020-10-15 00:07:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:24,555 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2020-10-15 00:07:24,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:07:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2020-10-15 00:07:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:07:24,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:24,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:24,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:07:24,557 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1431610674, now seen corresponding path program 7 times [2020-10-15 00:07:24,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:24,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545025458] [2020-10-15 00:07:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:07:24,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-15 00:07:24,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:07:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:07:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:24,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:24,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:24,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:07:24,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:25,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:25,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:07:25,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:25,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:25,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545025458] [2020-10-15 00:07:25,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:25,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:07:25,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39282190] [2020-10-15 00:07:25,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:07:25,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:25,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:07:25,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:07:25,348 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand 20 states. [2020-10-15 00:07:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:25,818 INFO L93 Difference]: Finished difference Result 136 states and 169 transitions. [2020-10-15 00:07:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:07:25,819 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-15 00:07:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:25,820 INFO L225 Difference]: With dead ends: 136 [2020-10-15 00:07:25,820 INFO L226 Difference]: Without dead ends: 130 [2020-10-15 00:07:25,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-15 00:07:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2020-10-15 00:07:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 00:07:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2020-10-15 00:07:25,842 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 38 [2020-10-15 00:07:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:25,842 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2020-10-15 00:07:25,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:07:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2020-10-15 00:07:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:07:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:25,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:25,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:07:25,844 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1770618937, now seen corresponding path program 8 times [2020-10-15 00:07:25,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:25,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194392002] [2020-10-15 00:07:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:25,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:07:25,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-15 00:07:25,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:25,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:07:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:25,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:26,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:26,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:26,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:26,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:26,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 00:07:26,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:26,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:07:26,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:07:26,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194392002] [2020-10-15 00:07:26,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:26,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:07:26,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105246674] [2020-10-15 00:07:26,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:07:26,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:26,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:07:26,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:07:26,134 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand 9 states. [2020-10-15 00:07:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:26,245 INFO L93 Difference]: Finished difference Result 131 states and 158 transitions. [2020-10-15 00:07:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:07:26,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-15 00:07:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:26,247 INFO L225 Difference]: With dead ends: 131 [2020-10-15 00:07:26,247 INFO L226 Difference]: Without dead ends: 119 [2020-10-15 00:07:26,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-15 00:07:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-15 00:07:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-15 00:07:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2020-10-15 00:07:26,258 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 38 [2020-10-15 00:07:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:26,259 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2020-10-15 00:07:26,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:07:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2020-10-15 00:07:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:07:26,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:26,260 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:26,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:07:26,261 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1394986079, now seen corresponding path program 9 times [2020-10-15 00:07:26,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:26,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346941348] [2020-10-15 00:07:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 00:07:26,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-15 00:07:26,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:07:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:07:26,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:26,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:26,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:26,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:07:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:26,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 00:07:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:26,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346941348] [2020-10-15 00:07:26,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:26,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:07:26,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065425933] [2020-10-15 00:07:26,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:07:26,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:26,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:07:26,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:26,750 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand 11 states. [2020-10-15 00:07:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:27,000 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2020-10-15 00:07:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:07:27,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-15 00:07:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:27,002 INFO L225 Difference]: With dead ends: 135 [2020-10-15 00:07:27,002 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 00:07:27,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 00:07:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-10-15 00:07:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-15 00:07:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2020-10-15 00:07:27,019 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 39 [2020-10-15 00:07:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:27,021 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2020-10-15 00:07:27,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:07:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2020-10-15 00:07:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:07:27,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:27,022 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:27,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:07:27,022 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:27,023 INFO L82 PathProgramCache]: Analyzing trace with hash 265027960, now seen corresponding path program 10 times [2020-10-15 00:07:27,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:27,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402664349] [2020-10-15 00:07:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 00:07:27,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-15 00:07:27,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:07:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:27,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:27,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:27,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:07:27,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 00:07:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:27,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402664349] [2020-10-15 00:07:27,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:27,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:07:27,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347087793] [2020-10-15 00:07:27,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:07:27,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:07:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:27,423 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand 11 states. [2020-10-15 00:07:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:27,599 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2020-10-15 00:07:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:07:27,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-15 00:07:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:27,600 INFO L225 Difference]: With dead ends: 127 [2020-10-15 00:07:27,601 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 00:07:27,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:07:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 00:07:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-15 00:07:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 00:07:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2020-10-15 00:07:27,617 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 39 [2020-10-15 00:07:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:27,617 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2020-10-15 00:07:27,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:07:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2020-10-15 00:07:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:07:27,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:27,619 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:27,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:07:27,619 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:27,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1907547097, now seen corresponding path program 11 times [2020-10-15 00:07:27,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:27,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928778587] [2020-10-15 00:07:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 00:07:27,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-15 00:07:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 00:07:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:07:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:07:27,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:07:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:07:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 00:07:27,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928778587] [2020-10-15 00:07:27,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:27,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:07:27,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448630648] [2020-10-15 00:07:27,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:07:27,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:07:27,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:07:27,845 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand 7 states. [2020-10-15 00:07:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:27,904 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2020-10-15 00:07:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:07:27,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-15 00:07:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:27,906 INFO L225 Difference]: With dead ends: 123 [2020-10-15 00:07:27,907 INFO L226 Difference]: Without dead ends: 108 [2020-10-15 00:07:27,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:07:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-15 00:07:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2020-10-15 00:07:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 00:07:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-10-15 00:07:27,920 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 39 [2020-10-15 00:07:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:27,920 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-10-15 00:07:27,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:07:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-10-15 00:07:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:07:27,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:27,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:27,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:07:27,922 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:27,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:27,923 INFO L82 PathProgramCache]: Analyzing trace with hash -73532542, now seen corresponding path program 12 times [2020-10-15 00:07:27,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:27,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471197961] [2020-10-15 00:07:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 00:07:28,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 00:07:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:07:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:28,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:28,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 00:07:28,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 00:07:28,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:28,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:07:28,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:28,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:07:28,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 00:07:28,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471197961] [2020-10-15 00:07:28,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:28,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:07:28,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751456252] [2020-10-15 00:07:28,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:07:28,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:28,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:07:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:07:28,126 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 7 states. [2020-10-15 00:07:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:28,180 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2020-10-15 00:07:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:07:28,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-15 00:07:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:28,182 INFO L225 Difference]: With dead ends: 159 [2020-10-15 00:07:28,182 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:07:28,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:07:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:07:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-15 00:07:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 00:07:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2020-10-15 00:07:28,194 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 39 [2020-10-15 00:07:28,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:28,194 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2020-10-15 00:07:28,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:07:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2020-10-15 00:07:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 00:07:28,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:28,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:28,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:07:28,196 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash -409339687, now seen corresponding path program 13 times [2020-10-15 00:07:28,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:28,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959408132] [2020-10-15 00:07:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:07:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-15 00:07:28,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:07:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:07:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:28,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:28,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:07:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:28,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 00:07:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:28,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:28,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959408132] [2020-10-15 00:07:28,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:28,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:07:28,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567421962] [2020-10-15 00:07:28,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:07:28,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:28,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:07:28,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:07:28,968 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 22 states. [2020-10-15 00:07:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:29,513 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2020-10-15 00:07:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:07:29,514 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-15 00:07:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:29,515 INFO L225 Difference]: With dead ends: 139 [2020-10-15 00:07:29,515 INFO L226 Difference]: Without dead ends: 133 [2020-10-15 00:07:29,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:07:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-15 00:07:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2020-10-15 00:07:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 00:07:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-10-15 00:07:29,537 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 40 [2020-10-15 00:07:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:29,537 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-10-15 00:07:29,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:07:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-10-15 00:07:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 00:07:29,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:29,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:29,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:07:29,539 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:29,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1337755289, now seen corresponding path program 14 times [2020-10-15 00:07:29,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:29,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975572412] [2020-10-15 00:07:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:29,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:07:29,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:29,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-15 00:07:29,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:29,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:07:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:07:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:29,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:29,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:29,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:29,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:29,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:29,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:07:29,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:29,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:30,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:30,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:30,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:30,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:07:30,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:30,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:30,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:07:30,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975572412] [2020-10-15 00:07:30,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:30,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:07:30,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247007290] [2020-10-15 00:07:30,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:07:30,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:30,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:07:30,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:07:30,263 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 20 states. [2020-10-15 00:07:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:30,700 INFO L93 Difference]: Finished difference Result 133 states and 156 transitions. [2020-10-15 00:07:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:07:30,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2020-10-15 00:07:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:30,702 INFO L225 Difference]: With dead ends: 133 [2020-10-15 00:07:30,702 INFO L226 Difference]: Without dead ends: 127 [2020-10-15 00:07:30,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:07:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-15 00:07:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-15 00:07:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-15 00:07:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-10-15 00:07:30,717 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 40 [2020-10-15 00:07:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:30,717 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-10-15 00:07:30,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:07:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-10-15 00:07:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:07:30,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:30,719 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:30,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:07:30,719 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:30,720 INFO L82 PathProgramCache]: Analyzing trace with hash 160099736, now seen corresponding path program 15 times [2020-10-15 00:07:30,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:30,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857025165] [2020-10-15 00:07:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:30,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:30,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:07:30,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:30,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 00:07:30,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:30,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:07:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:30,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:30,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:30,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:30,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:30,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:30,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:30,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:30,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:30,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:07:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:30,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:31,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:07:31,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:31,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:31,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:31,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857025165] [2020-10-15 00:07:31,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:31,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:07:31,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149247079] [2020-10-15 00:07:31,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:07:31,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:07:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:31,181 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 13 states. [2020-10-15 00:07:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:31,431 INFO L93 Difference]: Finished difference Result 151 states and 179 transitions. [2020-10-15 00:07:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:07:31,432 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-15 00:07:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:31,434 INFO L225 Difference]: With dead ends: 151 [2020-10-15 00:07:31,434 INFO L226 Difference]: Without dead ends: 137 [2020-10-15 00:07:31,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:07:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-15 00:07:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2020-10-15 00:07:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-15 00:07:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2020-10-15 00:07:31,451 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 41 [2020-10-15 00:07:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:31,452 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2020-10-15 00:07:31,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:07:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2020-10-15 00:07:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:07:31,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:31,453 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:31,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:07:31,454 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:31,454 INFO L82 PathProgramCache]: Analyzing trace with hash -508863585, now seen corresponding path program 16 times [2020-10-15 00:07:31,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:31,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31881534] [2020-10-15 00:07:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:31,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:07:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-15 00:07:31,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:31,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:07:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:31,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:31,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:31,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:31,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:31,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:31,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:31,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:31,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:07:31,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:31,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:31,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:31,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:07:31,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:31,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:31,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31881534] [2020-10-15 00:07:31,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:31,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:07:31,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777856410] [2020-10-15 00:07:31,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:07:31,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:31,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:07:31,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:31,868 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand 13 states. [2020-10-15 00:07:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:32,091 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2020-10-15 00:07:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:07:32,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-15 00:07:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:32,093 INFO L225 Difference]: With dead ends: 143 [2020-10-15 00:07:32,093 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 00:07:32,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:07:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 00:07:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-15 00:07:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-15 00:07:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-10-15 00:07:32,107 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 41 [2020-10-15 00:07:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:32,108 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-10-15 00:07:32,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:07:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-10-15 00:07:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:07:32,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:32,109 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:32,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:07:32,109 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:32,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:32,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2138005090, now seen corresponding path program 17 times [2020-10-15 00:07:32,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:32,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709505409] [2020-10-15 00:07:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:07:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-15 00:07:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:32,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:32,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:32,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:32,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:07:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:32,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:07:32,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 00:07:32,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709505409] [2020-10-15 00:07:32,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:32,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:07:32,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573420190] [2020-10-15 00:07:32,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:07:32,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:32,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:07:32,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:32,312 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 8 states. [2020-10-15 00:07:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:32,391 INFO L93 Difference]: Finished difference Result 245 states and 292 transitions. [2020-10-15 00:07:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:07:32,392 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-15 00:07:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:32,393 INFO L225 Difference]: With dead ends: 245 [2020-10-15 00:07:32,393 INFO L226 Difference]: Without dead ends: 163 [2020-10-15 00:07:32,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-15 00:07:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-15 00:07:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-15 00:07:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-10-15 00:07:32,411 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 41 [2020-10-15 00:07:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:32,411 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-10-15 00:07:32,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:07:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-10-15 00:07:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:07:32,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:32,412 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:32,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:07:32,413 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:32,413 INFO L82 PathProgramCache]: Analyzing trace with hash 854078425, now seen corresponding path program 18 times [2020-10-15 00:07:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:32,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683613222] [2020-10-15 00:07:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:07:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 00:07:32,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 00:07:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:32,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:32,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:07:32,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:32,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:32,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:32,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:07:32,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:32,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 00:07:32,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683613222] [2020-10-15 00:07:32,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:32,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:07:32,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782799309] [2020-10-15 00:07:32,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:07:32,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:32,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:07:32,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:32,646 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 8 states. [2020-10-15 00:07:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:32,740 INFO L93 Difference]: Finished difference Result 207 states and 249 transitions. [2020-10-15 00:07:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:07:32,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-15 00:07:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:32,743 INFO L225 Difference]: With dead ends: 207 [2020-10-15 00:07:32,743 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 00:07:32,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 00:07:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 173. [2020-10-15 00:07:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-15 00:07:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 207 transitions. [2020-10-15 00:07:32,766 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 207 transitions. Word has length 41 [2020-10-15 00:07:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:32,766 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 207 transitions. [2020-10-15 00:07:32,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:07:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 207 transitions. [2020-10-15 00:07:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:07:32,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:32,768 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:32,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:07:32,768 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1369826194, now seen corresponding path program 19 times [2020-10-15 00:07:32,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:32,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730348518] [2020-10-15 00:07:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:07:33,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-15 00:07:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:07:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:07:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:33,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:33,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:33,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:33,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:07:33,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:33,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:07:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:33,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730348518] [2020-10-15 00:07:33,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:33,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:07:33,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531589454] [2020-10-15 00:07:33,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:07:33,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:33,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:07:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:07:33,650 INFO L87 Difference]: Start difference. First operand 173 states and 207 transitions. Second operand 24 states. [2020-10-15 00:07:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:34,279 INFO L93 Difference]: Finished difference Result 223 states and 266 transitions. [2020-10-15 00:07:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:07:34,279 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2020-10-15 00:07:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:34,281 INFO L225 Difference]: With dead ends: 223 [2020-10-15 00:07:34,281 INFO L226 Difference]: Without dead ends: 217 [2020-10-15 00:07:34,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:07:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-15 00:07:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 189. [2020-10-15 00:07:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 00:07:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2020-10-15 00:07:34,306 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 42 [2020-10-15 00:07:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:34,306 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2020-10-15 00:07:34,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:07:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2020-10-15 00:07:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:07:34,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:34,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:34,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:07:34,309 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:34,309 INFO L82 PathProgramCache]: Analyzing trace with hash -402225529, now seen corresponding path program 20 times [2020-10-15 00:07:34,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:34,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48174767] [2020-10-15 00:07:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:07:34,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-15 00:07:34,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:07:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:34,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:34,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:34,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:07:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:34,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:07:34,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:34,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:34,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:34,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 00:07:34,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48174767] [2020-10-15 00:07:34,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:34,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:07:34,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958719054] [2020-10-15 00:07:34,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:07:34,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:34,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:07:34,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:34,694 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 11 states. [2020-10-15 00:07:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:34,884 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2020-10-15 00:07:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:07:34,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-15 00:07:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:34,887 INFO L225 Difference]: With dead ends: 229 [2020-10-15 00:07:34,887 INFO L226 Difference]: Without dead ends: 214 [2020-10-15 00:07:34,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:07:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-15 00:07:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2020-10-15 00:07:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-15 00:07:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 248 transitions. [2020-10-15 00:07:34,909 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 248 transitions. Word has length 42 [2020-10-15 00:07:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:34,909 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 248 transitions. [2020-10-15 00:07:34,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:07:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 248 transitions. [2020-10-15 00:07:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:07:34,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:34,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:07:34,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:07:34,912 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:34,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1931193074, now seen corresponding path program 21 times [2020-10-15 00:07:34,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:34,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527895275] [2020-10-15 00:07:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:35,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:35,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:07:35,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-15 00:07:35,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:35,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:07:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:07:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:35,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:35,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:35,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:35,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:35,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:07:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:35,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:35,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:35,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:35,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:35,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:07:35,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:35,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:07:35,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527895275] [2020-10-15 00:07:35,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:35,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:07:35,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032531612] [2020-10-15 00:07:35,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:07:35,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:35,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:07:35,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:07:35,703 INFO L87 Difference]: Start difference. First operand 209 states and 248 transitions. Second operand 22 states. [2020-10-15 00:07:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:36,265 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2020-10-15 00:07:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:07:36,267 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2020-10-15 00:07:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:36,269 INFO L225 Difference]: With dead ends: 227 [2020-10-15 00:07:36,269 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 00:07:36,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:07:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 00:07:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2020-10-15 00:07:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-15 00:07:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2020-10-15 00:07:36,304 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 42 [2020-10-15 00:07:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:36,304 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2020-10-15 00:07:36,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:07:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2020-10-15 00:07:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:07:36,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:36,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:36,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:07:36,308 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash -658076149, now seen corresponding path program 22 times [2020-10-15 00:07:36,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:36,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503823133] [2020-10-15 00:07:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:07:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-15 00:07:36,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:36,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:07:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:36,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:36,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:36,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:36,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:36,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:36,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:36,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:36,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:36,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:07:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:36,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 00:07:36,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503823133] [2020-10-15 00:07:36,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:36,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:07:36,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645415174] [2020-10-15 00:07:36,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:07:36,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:36,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:07:36,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:36,672 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand 11 states. [2020-10-15 00:07:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:36,861 INFO L93 Difference]: Finished difference Result 221 states and 260 transitions. [2020-10-15 00:07:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:07:36,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-15 00:07:36,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:36,863 INFO L225 Difference]: With dead ends: 221 [2020-10-15 00:07:36,863 INFO L226 Difference]: Without dead ends: 201 [2020-10-15 00:07:36,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:07:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-15 00:07:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-10-15 00:07:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-15 00:07:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 235 transitions. [2020-10-15 00:07:36,904 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 235 transitions. Word has length 42 [2020-10-15 00:07:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:36,904 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 235 transitions. [2020-10-15 00:07:36,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:07:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 235 transitions. [2020-10-15 00:07:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:07:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:36,909 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:36,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:07:36,910 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash -520332801, now seen corresponding path program 23 times [2020-10-15 00:07:36,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:36,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906842276] [2020-10-15 00:07:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:07:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-15 00:07:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:07:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:37,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:37,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:07:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:37,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906842276] [2020-10-15 00:07:37,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:37,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:07:37,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12694564] [2020-10-15 00:07:37,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:07:37,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:37,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:07:37,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:07:37,367 INFO L87 Difference]: Start difference. First operand 199 states and 235 transitions. Second operand 15 states. [2020-10-15 00:07:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:37,763 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2020-10-15 00:07:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:07:37,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-15 00:07:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:37,765 INFO L225 Difference]: With dead ends: 243 [2020-10-15 00:07:37,765 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 00:07:37,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:07:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 00:07:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2020-10-15 00:07:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-15 00:07:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2020-10-15 00:07:37,789 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 43 [2020-10-15 00:07:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:37,789 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2020-10-15 00:07:37,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:07:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2020-10-15 00:07:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:07:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:37,792 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:37,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:07:37,792 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 216640728, now seen corresponding path program 24 times [2020-10-15 00:07:37,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:37,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984228854] [2020-10-15 00:07:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:07:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-15 00:07:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:07:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:38,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:38,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:07:38,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:38,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:38,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:07:38,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:38,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984228854] [2020-10-15 00:07:38,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:38,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:07:38,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857351228] [2020-10-15 00:07:38,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:07:38,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:38,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:07:38,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:07:38,232 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand 15 states. [2020-10-15 00:07:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:38,595 INFO L93 Difference]: Finished difference Result 235 states and 276 transitions. [2020-10-15 00:07:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:07:38,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-15 00:07:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:38,597 INFO L225 Difference]: With dead ends: 235 [2020-10-15 00:07:38,598 INFO L226 Difference]: Without dead ends: 223 [2020-10-15 00:07:38,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:07:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-15 00:07:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-15 00:07:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-15 00:07:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 260 transitions. [2020-10-15 00:07:38,633 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 260 transitions. Word has length 43 [2020-10-15 00:07:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:38,633 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 260 transitions. [2020-10-15 00:07:38,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:07:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 260 transitions. [2020-10-15 00:07:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:07:38,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:38,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:38,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:07:38,638 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:38,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash -444003079, now seen corresponding path program 25 times [2020-10-15 00:07:38,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:38,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368734314] [2020-10-15 00:07:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:07:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-15 00:07:38,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 00:07:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:38,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:38,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:38,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:07:38,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:38,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:07:38,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:38,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:38,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:38,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 00:07:38,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:38,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 00:07:38,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368734314] [2020-10-15 00:07:38,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:38,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:07:38,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995017007] [2020-10-15 00:07:38,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:07:38,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:38,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:07:38,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:07:38,867 INFO L87 Difference]: Start difference. First operand 221 states and 260 transitions. Second operand 9 states. [2020-10-15 00:07:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:38,989 INFO L93 Difference]: Finished difference Result 239 states and 280 transitions. [2020-10-15 00:07:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:07:38,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-15 00:07:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:38,991 INFO L225 Difference]: With dead ends: 239 [2020-10-15 00:07:38,991 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 00:07:38,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:07:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 00:07:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 206. [2020-10-15 00:07:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-15 00:07:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 239 transitions. [2020-10-15 00:07:39,015 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 239 transitions. Word has length 43 [2020-10-15 00:07:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:39,016 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 239 transitions. [2020-10-15 00:07:39,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:07:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 239 transitions. [2020-10-15 00:07:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:07:39,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:39,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:39,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:07:39,018 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:39,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1181398018, now seen corresponding path program 26 times [2020-10-15 00:07:39,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:39,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315940891] [2020-10-15 00:07:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:07:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:07:39,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:07:39,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:07:39,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:07:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:39,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:07:39,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 00:07:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 00:07:39,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315940891] [2020-10-15 00:07:39,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:39,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:07:39,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2280144] [2020-10-15 00:07:39,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:07:39,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:39,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:07:39,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:07:39,223 INFO L87 Difference]: Start difference. First operand 206 states and 239 transitions. Second operand 9 states. [2020-10-15 00:07:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:39,326 INFO L93 Difference]: Finished difference Result 332 states and 382 transitions. [2020-10-15 00:07:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:07:39,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-15 00:07:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:39,329 INFO L225 Difference]: With dead ends: 332 [2020-10-15 00:07:39,329 INFO L226 Difference]: Without dead ends: 211 [2020-10-15 00:07:39,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:07:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-15 00:07:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-10-15 00:07:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 00:07:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2020-10-15 00:07:39,353 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 43 [2020-10-15 00:07:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:39,354 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2020-10-15 00:07:39,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:07:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2020-10-15 00:07:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:07:39,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:39,356 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:39,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:07:39,356 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1909343879, now seen corresponding path program 27 times [2020-10-15 00:07:39,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:39,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831007305] [2020-10-15 00:07:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:07:39,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-15 00:07:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:07:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:07:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:39,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:07:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:40,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831007305] [2020-10-15 00:07:40,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:40,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:07:40,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848986771] [2020-10-15 00:07:40,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:07:40,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:40,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:07:40,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:07:40,304 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 26 states. [2020-10-15 00:07:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:41,101 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2020-10-15 00:07:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:07:41,102 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2020-10-15 00:07:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:41,104 INFO L225 Difference]: With dead ends: 269 [2020-10-15 00:07:41,104 INFO L226 Difference]: Without dead ends: 263 [2020-10-15 00:07:41,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:07:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-15 00:07:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 227. [2020-10-15 00:07:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-15 00:07:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 263 transitions. [2020-10-15 00:07:41,140 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 263 transitions. Word has length 44 [2020-10-15 00:07:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:41,141 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 263 transitions. [2020-10-15 00:07:41,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:07:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 263 transitions. [2020-10-15 00:07:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:07:41,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:41,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:07:41,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:07:41,146 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1395186759, now seen corresponding path program 28 times [2020-10-15 00:07:41,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:41,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033864632] [2020-10-15 00:07:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:41,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:07:41,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-15 00:07:41,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:41,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:07:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:07:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:41,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:41,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:41,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:41,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:41,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:41,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:41,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:07:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:41,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:41,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:41,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:07:41,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:41,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:07:42,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033864632] [2020-10-15 00:07:42,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:42,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:07:42,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346519381] [2020-10-15 00:07:42,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:07:42,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:07:42,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:07:42,046 INFO L87 Difference]: Start difference. First operand 227 states and 263 transitions. Second operand 24 states. [2020-10-15 00:07:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:42,716 INFO L93 Difference]: Finished difference Result 233 states and 268 transitions. [2020-10-15 00:07:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:07:42,717 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2020-10-15 00:07:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:42,719 INFO L225 Difference]: With dead ends: 233 [2020-10-15 00:07:42,719 INFO L226 Difference]: Without dead ends: 211 [2020-10-15 00:07:42,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:07:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-15 00:07:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-10-15 00:07:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 00:07:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 245 transitions. [2020-10-15 00:07:42,749 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 245 transitions. Word has length 44 [2020-10-15 00:07:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:42,750 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 245 transitions. [2020-10-15 00:07:42,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:07:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 245 transitions. [2020-10-15 00:07:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:07:42,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:42,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:42,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:07:42,752 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1454143865, now seen corresponding path program 29 times [2020-10-15 00:07:42,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:42,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346911448] [2020-10-15 00:07:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:07:43,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-15 00:07:43,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:07:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:07:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 00:07:43,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:07:43,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:07:43,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346911448] [2020-10-15 00:07:43,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:43,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:07:43,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462847294] [2020-10-15 00:07:43,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:07:43,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:07:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:07:43,519 INFO L87 Difference]: Start difference. First operand 211 states and 245 transitions. Second operand 22 states. [2020-10-15 00:07:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:44,093 INFO L93 Difference]: Finished difference Result 229 states and 266 transitions. [2020-10-15 00:07:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:07:44,093 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-10-15 00:07:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:44,096 INFO L225 Difference]: With dead ends: 229 [2020-10-15 00:07:44,096 INFO L226 Difference]: Without dead ends: 223 [2020-10-15 00:07:44,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:07:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-15 00:07:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-15 00:07:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-15 00:07:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 258 transitions. [2020-10-15 00:07:44,121 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 258 transitions. Word has length 44 [2020-10-15 00:07:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:44,121 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 258 transitions. [2020-10-15 00:07:44,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:07:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 258 transitions. [2020-10-15 00:07:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:07:44,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:44,124 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:44,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:07:44,124 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash 904610040, now seen corresponding path program 30 times [2020-10-15 00:07:44,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:44,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945332128] [2020-10-15 00:07:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:07:44,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 00:07:44,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:07:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:07:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:44,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:44,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:07:44,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:44,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:07:44,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:44,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945332128] [2020-10-15 00:07:44,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:44,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:07:44,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724265400] [2020-10-15 00:07:44,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:07:44,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:44,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:07:44,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:07:44,647 INFO L87 Difference]: Start difference. First operand 221 states and 258 transitions. Second operand 17 states. [2020-10-15 00:07:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:45,145 INFO L93 Difference]: Finished difference Result 267 states and 313 transitions. [2020-10-15 00:07:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:07:45,146 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-15 00:07:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:45,148 INFO L225 Difference]: With dead ends: 267 [2020-10-15 00:07:45,148 INFO L226 Difference]: Without dead ends: 253 [2020-10-15 00:07:45,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:07:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-15 00:07:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2020-10-15 00:07:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-15 00:07:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 286 transitions. [2020-10-15 00:07:45,175 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 286 transitions. Word has length 45 [2020-10-15 00:07:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:45,176 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 286 transitions. [2020-10-15 00:07:45,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:07:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 286 transitions. [2020-10-15 00:07:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:07:45,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:45,179 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:45,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:07:45,179 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:45,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2019014337, now seen corresponding path program 31 times [2020-10-15 00:07:45,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:45,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488362722] [2020-10-15 00:07:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:07:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:45,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:45,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 00:07:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 00:07:45,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:45,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488362722] [2020-10-15 00:07:45,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:45,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:07:45,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574555770] [2020-10-15 00:07:45,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:07:45,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:45,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:07:45,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:07:45,788 INFO L87 Difference]: Start difference. First operand 244 states and 286 transitions. Second operand 17 states. [2020-10-15 00:07:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:46,251 INFO L93 Difference]: Finished difference Result 259 states and 301 transitions. [2020-10-15 00:07:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:07:46,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-15 00:07:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:46,254 INFO L225 Difference]: With dead ends: 259 [2020-10-15 00:07:46,255 INFO L226 Difference]: Without dead ends: 247 [2020-10-15 00:07:46,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:07:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-15 00:07:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-10-15 00:07:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-15 00:07:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 285 transitions. [2020-10-15 00:07:46,284 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 285 transitions. Word has length 45 [2020-10-15 00:07:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:46,284 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 285 transitions. [2020-10-15 00:07:46,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:07:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 285 transitions. [2020-10-15 00:07:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:07:46,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:46,287 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:46,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:07:46,288 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:46,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1551563614, now seen corresponding path program 32 times [2020-10-15 00:07:46,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:46,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104981051] [2020-10-15 00:07:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:46,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:07:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 00:07:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 00:07:46,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104981051] [2020-10-15 00:07:46,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:46,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:07:46,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15849307] [2020-10-15 00:07:46,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:07:46,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:46,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:07:46,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:07:46,524 INFO L87 Difference]: Start difference. First operand 245 states and 285 transitions. Second operand 10 states. [2020-10-15 00:07:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:46,679 INFO L93 Difference]: Finished difference Result 448 states and 522 transitions. [2020-10-15 00:07:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:07:46,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-15 00:07:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:46,683 INFO L225 Difference]: With dead ends: 448 [2020-10-15 00:07:46,683 INFO L226 Difference]: Without dead ends: 301 [2020-10-15 00:07:46,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:07:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-15 00:07:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 283. [2020-10-15 00:07:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-15 00:07:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 330 transitions. [2020-10-15 00:07:46,733 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 330 transitions. Word has length 45 [2020-10-15 00:07:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:46,734 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 330 transitions. [2020-10-15 00:07:46,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:07:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 330 transitions. [2020-10-15 00:07:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:07:46,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:46,737 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:46,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:07:46,737 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 167156985, now seen corresponding path program 33 times [2020-10-15 00:07:46,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:46,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048445919] [2020-10-15 00:07:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:07:46,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-15 00:07:46,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 00:07:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:46,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:46,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:46,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:46,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:07:46,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 00:07:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 00:07:47,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048445919] [2020-10-15 00:07:47,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:47,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:07:47,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145208507] [2020-10-15 00:07:47,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:07:47,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:47,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:07:47,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:07:47,037 INFO L87 Difference]: Start difference. First operand 283 states and 330 transitions. Second operand 10 states. [2020-10-15 00:07:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:47,175 INFO L93 Difference]: Finished difference Result 369 states and 435 transitions. [2020-10-15 00:07:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:07:47,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-15 00:07:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:47,177 INFO L225 Difference]: With dead ends: 369 [2020-10-15 00:07:47,177 INFO L226 Difference]: Without dead ends: 339 [2020-10-15 00:07:47,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:07:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-15 00:07:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 321. [2020-10-15 00:07:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-15 00:07:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 375 transitions. [2020-10-15 00:07:47,219 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 375 transitions. Word has length 45 [2020-10-15 00:07:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:47,219 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 375 transitions. [2020-10-15 00:07:47,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:07:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 375 transitions. [2020-10-15 00:07:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:07:47,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:47,223 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:47,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:07:47,223 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:47,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1799793138, now seen corresponding path program 34 times [2020-10-15 00:07:47,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:47,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574173824] [2020-10-15 00:07:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:07:47,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-15 00:07:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:47,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:07:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:07:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:47,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:47,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:47,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:07:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:47,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:48,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-15 00:07:48,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:07:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:48,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574173824] [2020-10-15 00:07:48,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:48,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:07:48,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092408626] [2020-10-15 00:07:48,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:07:48,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:48,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:07:48,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:07:48,415 INFO L87 Difference]: Start difference. First operand 321 states and 375 transitions. Second operand 28 states. [2020-10-15 00:07:49,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:49,313 INFO L93 Difference]: Finished difference Result 391 states and 456 transitions. [2020-10-15 00:07:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:07:49,314 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-10-15 00:07:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:49,317 INFO L225 Difference]: With dead ends: 391 [2020-10-15 00:07:49,317 INFO L226 Difference]: Without dead ends: 385 [2020-10-15 00:07:49,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=1309, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:07:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-15 00:07:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 337. [2020-10-15 00:07:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-15 00:07:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 394 transitions. [2020-10-15 00:07:49,365 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 394 transitions. Word has length 46 [2020-10-15 00:07:49,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:49,365 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 394 transitions. [2020-10-15 00:07:49,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:07:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 394 transitions. [2020-10-15 00:07:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:07:49,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:49,370 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:07:49,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:07:49,370 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:49,370 INFO L82 PathProgramCache]: Analyzing trace with hash 646206930, now seen corresponding path program 35 times [2020-10-15 00:07:49,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:49,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232537353] [2020-10-15 00:07:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:07:49,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:07:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:49,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:49,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-15 00:07:49,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:49,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:07:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:07:50,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232537353] [2020-10-15 00:07:50,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:50,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:07:50,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671488342] [2020-10-15 00:07:50,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:07:50,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:07:50,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:07:50,255 INFO L87 Difference]: Start difference. First operand 337 states and 394 transitions. Second operand 26 states. [2020-10-15 00:07:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:51,021 INFO L93 Difference]: Finished difference Result 343 states and 399 transitions. [2020-10-15 00:07:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:07:51,022 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2020-10-15 00:07:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:51,024 INFO L225 Difference]: With dead ends: 343 [2020-10-15 00:07:51,024 INFO L226 Difference]: Without dead ends: 321 [2020-10-15 00:07:51,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:07:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-15 00:07:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2020-10-15 00:07:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-15 00:07:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2020-10-15 00:07:51,069 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 46 [2020-10-15 00:07:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:51,069 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2020-10-15 00:07:51,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:07:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2020-10-15 00:07:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:07:51,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:51,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:51,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:07:51,073 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash -408449205, now seen corresponding path program 36 times [2020-10-15 00:07:51,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:51,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110523648] [2020-10-15 00:07:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:07:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 00:07:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:07:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:51,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:07:51,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 00:07:51,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110523648] [2020-10-15 00:07:51,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:51,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:07:51,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261948069] [2020-10-15 00:07:51,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:07:51,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:51,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:07:51,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:51,458 INFO L87 Difference]: Start difference. First operand 321 states and 376 transitions. Second operand 13 states. [2020-10-15 00:07:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:51,754 INFO L93 Difference]: Finished difference Result 377 states and 442 transitions. [2020-10-15 00:07:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:07:51,755 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-15 00:07:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:51,758 INFO L225 Difference]: With dead ends: 377 [2020-10-15 00:07:51,759 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 00:07:51,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:07:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 00:07:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 356. [2020-10-15 00:07:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-15 00:07:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 415 transitions. [2020-10-15 00:07:51,804 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 415 transitions. Word has length 46 [2020-10-15 00:07:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:51,804 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 415 transitions. [2020-10-15 00:07:51,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:07:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 415 transitions. [2020-10-15 00:07:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:07:51,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:51,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:07:51,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 00:07:51,809 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash -767547790, now seen corresponding path program 37 times [2020-10-15 00:07:51,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:51,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842338543] [2020-10-15 00:07:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:07:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-15 00:07:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:07:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:07:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:52,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:07:52,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:52,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:07:52,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:07:52,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842338543] [2020-10-15 00:07:52,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:52,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:07:52,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611119706] [2020-10-15 00:07:52,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:07:52,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:52,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:07:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:07:52,603 INFO L87 Difference]: Start difference. First operand 356 states and 415 transitions. Second operand 24 states. [2020-10-15 00:07:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:53,288 INFO L93 Difference]: Finished difference Result 374 states and 437 transitions. [2020-10-15 00:07:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:07:53,297 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-10-15 00:07:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:53,299 INFO L225 Difference]: With dead ends: 374 [2020-10-15 00:07:53,299 INFO L226 Difference]: Without dead ends: 358 [2020-10-15 00:07:53,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:07:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-15 00:07:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 353. [2020-10-15 00:07:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-15 00:07:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 413 transitions. [2020-10-15 00:07:53,341 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 413 transitions. Word has length 46 [2020-10-15 00:07:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:53,342 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 413 transitions. [2020-10-15 00:07:53,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:07:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 413 transitions. [2020-10-15 00:07:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:07:53,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:53,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:53,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 00:07:53,347 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash -772788601, now seen corresponding path program 38 times [2020-10-15 00:07:53,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:53,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359252505] [2020-10-15 00:07:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:07:53,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-15 00:07:53,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:53,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:07:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:53,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:53,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:53,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:07:53,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:07:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:07:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:53,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 00:07:53,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:53,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:53,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 00:07:53,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359252505] [2020-10-15 00:07:53,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:53,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:07:53,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519271540] [2020-10-15 00:07:53,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:07:53,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:53,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:07:53,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:53,776 INFO L87 Difference]: Start difference. First operand 353 states and 413 transitions. Second operand 13 states. [2020-10-15 00:07:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:54,076 INFO L93 Difference]: Finished difference Result 367 states and 426 transitions. [2020-10-15 00:07:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:07:54,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-15 00:07:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:54,080 INFO L225 Difference]: With dead ends: 367 [2020-10-15 00:07:54,080 INFO L226 Difference]: Without dead ends: 345 [2020-10-15 00:07:54,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:07:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-15 00:07:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-15 00:07:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-15 00:07:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 397 transitions. [2020-10-15 00:07:54,122 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 397 transitions. Word has length 46 [2020-10-15 00:07:54,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:54,122 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 397 transitions. [2020-10-15 00:07:54,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:07:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 397 transitions. [2020-10-15 00:07:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:07:54,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:54,127 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:54,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 00:07:54,127 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:54,128 INFO L82 PathProgramCache]: Analyzing trace with hash -76259425, now seen corresponding path program 39 times [2020-10-15 00:07:54,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:54,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185542472] [2020-10-15 00:07:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:07:54,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-15 00:07:54,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:07:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:07:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:54,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:54,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:07:54,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:54,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:07:54,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:54,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185542472] [2020-10-15 00:07:54,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:54,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:07:54,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310579985] [2020-10-15 00:07:54,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:07:54,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:54,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:07:54,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:07:54,952 INFO L87 Difference]: Start difference. First operand 343 states and 397 transitions. Second operand 19 states. [2020-10-15 00:07:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:55,577 INFO L93 Difference]: Finished difference Result 409 states and 476 transitions. [2020-10-15 00:07:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:07:55,578 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-15 00:07:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:55,581 INFO L225 Difference]: With dead ends: 409 [2020-10-15 00:07:55,581 INFO L226 Difference]: Without dead ends: 395 [2020-10-15 00:07:55,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:07:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-15 00:07:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 386. [2020-10-15 00:07:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-15 00:07:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 448 transitions. [2020-10-15 00:07:55,631 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 448 transitions. Word has length 47 [2020-10-15 00:07:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:55,632 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 448 transitions. [2020-10-15 00:07:55,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:07:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 448 transitions. [2020-10-15 00:07:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:07:55,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:55,636 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:55,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 00:07:55,637 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash -514301896, now seen corresponding path program 40 times [2020-10-15 00:07:55,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:55,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608589859] [2020-10-15 00:07:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:07:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-15 00:07:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:07:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:07:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:07:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:56,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:56,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:56,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:56,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 00:07:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:07:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:07:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:56,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:56,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:07:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:07:56,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608589859] [2020-10-15 00:07:56,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:56,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:07:56,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271957911] [2020-10-15 00:07:56,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:07:56,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:56,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:07:56,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:07:56,425 INFO L87 Difference]: Start difference. First operand 386 states and 448 transitions. Second operand 19 states. [2020-10-15 00:07:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:57,066 INFO L93 Difference]: Finished difference Result 401 states and 463 transitions. [2020-10-15 00:07:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:07:57,067 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-15 00:07:57,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:57,071 INFO L225 Difference]: With dead ends: 401 [2020-10-15 00:07:57,071 INFO L226 Difference]: Without dead ends: 389 [2020-10-15 00:07:57,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:07:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-15 00:07:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2020-10-15 00:07:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-15 00:07:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 446 transitions. [2020-10-15 00:07:57,120 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 446 transitions. Word has length 47 [2020-10-15 00:07:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:57,120 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 446 transitions. [2020-10-15 00:07:57,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:07:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 446 transitions. [2020-10-15 00:07:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:07:57,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:57,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:57,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 00:07:57,126 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash 704504217, now seen corresponding path program 41 times [2020-10-15 00:07:57,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:57,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11194563] [2020-10-15 00:07:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:07:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:57,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:07:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-15 00:07:57,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11194563] [2020-10-15 00:07:57,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:57,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:07:57,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610066304] [2020-10-15 00:07:57,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:07:57,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:57,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:07:57,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:57,382 INFO L87 Difference]: Start difference. First operand 387 states and 446 transitions. Second operand 11 states. [2020-10-15 00:07:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:57,579 INFO L93 Difference]: Finished difference Result 413 states and 476 transitions. [2020-10-15 00:07:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:07:57,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-15 00:07:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:57,582 INFO L225 Difference]: With dead ends: 413 [2020-10-15 00:07:57,582 INFO L226 Difference]: Without dead ends: 386 [2020-10-15 00:07:57,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:07:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-15 00:07:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 374. [2020-10-15 00:07:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-15 00:07:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 427 transitions. [2020-10-15 00:07:57,630 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 427 transitions. Word has length 47 [2020-10-15 00:07:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:57,631 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 427 transitions. [2020-10-15 00:07:57,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:07:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 427 transitions. [2020-10-15 00:07:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:07:57,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:57,635 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:57,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 00:07:57,635 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:57,635 INFO L82 PathProgramCache]: Analyzing trace with hash 551076162, now seen corresponding path program 42 times [2020-10-15 00:07:57,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:57,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302172770] [2020-10-15 00:07:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:07:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-15 00:07:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:57,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:57,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:07:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:07:57,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 00:07:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-15 00:07:57,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302172770] [2020-10-15 00:07:57,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:57,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:07:57,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200858164] [2020-10-15 00:07:57,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:07:57,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:57,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:07:57,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:57,917 INFO L87 Difference]: Start difference. First operand 374 states and 427 transitions. Second operand 11 states. [2020-10-15 00:07:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:58,110 INFO L93 Difference]: Finished difference Result 590 states and 667 transitions. [2020-10-15 00:07:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:07:58,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-15 00:07:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:58,116 INFO L225 Difference]: With dead ends: 590 [2020-10-15 00:07:58,117 INFO L226 Difference]: Without dead ends: 381 [2020-10-15 00:07:58,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:07:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-15 00:07:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-10-15 00:07:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-15 00:07:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 434 transitions. [2020-10-15 00:07:58,162 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 434 transitions. Word has length 47 [2020-10-15 00:07:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:58,163 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 434 transitions. [2020-10-15 00:07:58,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:07:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 434 transitions. [2020-10-15 00:07:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:07:58,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:58,166 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:58,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 00:07:58,166 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:58,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1201238553, now seen corresponding path program 43 times [2020-10-15 00:07:58,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:58,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241100001] [2020-10-15 00:07:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:07:58,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-15 00:07:58,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:07:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:07:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:07:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:58,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:07:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:07:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:58,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:59,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241100001] [2020-10-15 00:07:59,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:59,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:07:59,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347998471] [2020-10-15 00:07:59,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:07:59,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:59,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:07:59,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:59,225 INFO L87 Difference]: Start difference. First operand 381 states and 434 transitions. Second operand 30 states. [2020-10-15 00:08:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:00,348 INFO L93 Difference]: Finished difference Result 459 states and 523 transitions. [2020-10-15 00:08:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:00,348 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 48 [2020-10-15 00:08:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:00,352 INFO L225 Difference]: With dead ends: 459 [2020-10-15 00:08:00,353 INFO L226 Difference]: Without dead ends: 453 [2020-10-15 00:08:00,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:08:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-15 00:08:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 397. [2020-10-15 00:08:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-15 00:08:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-10-15 00:08:00,401 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 48 [2020-10-15 00:08:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:00,402 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-10-15 00:08:00,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-10-15 00:08:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:08:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:00,406 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:08:00,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 00:08:00,406 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1180334297, now seen corresponding path program 44 times [2020-10-15 00:08:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:00,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43553517] [2020-10-15 00:08:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:08:00,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-15 00:08:00,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:08:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:08:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:00,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:08:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:08:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:01,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:01,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:01,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:08:01,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:01,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:08:01,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43553517] [2020-10-15 00:08:01,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:01,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:01,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122217148] [2020-10-15 00:08:01,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:01,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:01,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:01,407 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 28 states. [2020-10-15 00:08:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:02,402 INFO L93 Difference]: Finished difference Result 403 states and 458 transitions. [2020-10-15 00:08:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:02,408 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 48 [2020-10-15 00:08:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:02,410 INFO L225 Difference]: With dead ends: 403 [2020-10-15 00:08:02,411 INFO L226 Difference]: Without dead ends: 381 [2020-10-15 00:08:02,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:08:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-15 00:08:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-10-15 00:08:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-15 00:08:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 435 transitions. [2020-10-15 00:08:02,462 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 435 transitions. Word has length 48 [2020-10-15 00:08:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:02,462 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 435 transitions. [2020-10-15 00:08:02,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 435 transitions. [2020-10-15 00:08:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:08:02,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:02,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:08:02,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 00:08:02,466 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:02,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:02,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1281576423, now seen corresponding path program 45 times [2020-10-15 00:08:02,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:02,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144284440] [2020-10-15 00:08:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:02,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:08:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:08:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:02,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:02,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:02,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:02,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:08:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:08:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:03,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:03,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:03,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:08:03,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:03,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:08:03,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144284440] [2020-10-15 00:08:03,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:03,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:03,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508368934] [2020-10-15 00:08:03,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:03,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:03,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:03,420 INFO L87 Difference]: Start difference. First operand 381 states and 435 transitions. Second operand 26 states. [2020-10-15 00:08:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:04,274 INFO L93 Difference]: Finished difference Result 387 states and 440 transitions. [2020-10-15 00:08:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:08:04,275 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 48 [2020-10-15 00:08:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:04,277 INFO L225 Difference]: With dead ends: 387 [2020-10-15 00:08:04,277 INFO L226 Difference]: Without dead ends: 363 [2020-10-15 00:08:04,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:08:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-15 00:08:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2020-10-15 00:08:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-15 00:08:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 415 transitions. [2020-10-15 00:08:04,312 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 415 transitions. Word has length 48 [2020-10-15 00:08:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:04,313 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 415 transitions. [2020-10-15 00:08:04,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 415 transitions. [2020-10-15 00:08:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:08:04,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:04,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:04,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 00:08:04,317 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1596835623, now seen corresponding path program 46 times [2020-10-15 00:08:04,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:04,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758100569] [2020-10-15 00:08:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:08:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:04,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:08:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:08:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:08:05,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758100569] [2020-10-15 00:08:05,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:05,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:08:05,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321525451] [2020-10-15 00:08:05,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:08:05,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:08:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:05,130 INFO L87 Difference]: Start difference. First operand 363 states and 415 transitions. Second operand 24 states. [2020-10-15 00:08:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:05,883 INFO L93 Difference]: Finished difference Result 381 states and 436 transitions. [2020-10-15 00:08:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:08:05,884 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-10-15 00:08:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:05,887 INFO L225 Difference]: With dead ends: 381 [2020-10-15 00:08:05,887 INFO L226 Difference]: Without dead ends: 375 [2020-10-15 00:08:05,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:08:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-15 00:08:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2020-10-15 00:08:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-15 00:08:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 428 transitions. [2020-10-15 00:08:05,934 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 428 transitions. Word has length 48 [2020-10-15 00:08:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:05,935 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 428 transitions. [2020-10-15 00:08:05,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:08:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 428 transitions. [2020-10-15 00:08:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:08:05,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:05,940 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:05,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 00:08:05,940 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1451582376, now seen corresponding path program 47 times [2020-10-15 00:08:05,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:05,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894884952] [2020-10-15 00:08:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:08:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:06,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:08:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:08:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:08:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:08:06,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894884952] [2020-10-15 00:08:06,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:06,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:08:06,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687027346] [2020-10-15 00:08:06,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:08:06,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:06,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:08:06,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:08:06,690 INFO L87 Difference]: Start difference. First operand 373 states and 428 transitions. Second operand 21 states. [2020-10-15 00:08:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:07,518 INFO L93 Difference]: Finished difference Result 441 states and 509 transitions. [2020-10-15 00:08:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:08:07,519 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-15 00:08:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:07,522 INFO L225 Difference]: With dead ends: 441 [2020-10-15 00:08:07,522 INFO L226 Difference]: Without dead ends: 427 [2020-10-15 00:08:07,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:08:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-15 00:08:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 418. [2020-10-15 00:08:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-15 00:08:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 481 transitions. [2020-10-15 00:08:07,572 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 481 transitions. Word has length 49 [2020-10-15 00:08:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:07,572 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 481 transitions. [2020-10-15 00:08:07,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:08:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 481 transitions. [2020-10-15 00:08:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:08:07,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:07,577 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:07,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 00:08:07,577 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:07,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2145997089, now seen corresponding path program 48 times [2020-10-15 00:08:07,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:07,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600902603] [2020-10-15 00:08:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:07,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:08:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:07,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:07,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:08,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:08,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:08,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:08:08,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:08,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:08:08,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600902603] [2020-10-15 00:08:08,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:08,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:08:08,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726710769] [2020-10-15 00:08:08,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:08:08,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:08:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:08:08,299 INFO L87 Difference]: Start difference. First operand 418 states and 481 transitions. Second operand 21 states. [2020-10-15 00:08:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:09,117 INFO L93 Difference]: Finished difference Result 433 states and 496 transitions. [2020-10-15 00:08:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:08:09,119 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-15 00:08:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:09,121 INFO L225 Difference]: With dead ends: 433 [2020-10-15 00:08:09,121 INFO L226 Difference]: Without dead ends: 421 [2020-10-15 00:08:09,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:08:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-15 00:08:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-10-15 00:08:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-15 00:08:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 479 transitions. [2020-10-15 00:08:09,164 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 479 transitions. Word has length 49 [2020-10-15 00:08:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:09,164 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 479 transitions. [2020-10-15 00:08:09,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:08:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 479 transitions. [2020-10-15 00:08:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:08:09,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:09,168 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:09,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-15 00:08:09,168 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:09,169 INFO L82 PathProgramCache]: Analyzing trace with hash 537375778, now seen corresponding path program 49 times [2020-10-15 00:08:09,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:09,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990842553] [2020-10-15 00:08:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:08:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:09,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:09,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:08:09,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:08:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:09,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:09,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-15 00:08:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990842553] [2020-10-15 00:08:09,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:09,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:08:09,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993344930] [2020-10-15 00:08:09,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:08:09,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:09,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:08:09,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:08:09,435 INFO L87 Difference]: Start difference. First operand 419 states and 479 transitions. Second operand 12 states. [2020-10-15 00:08:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:09,684 INFO L93 Difference]: Finished difference Result 740 states and 845 transitions. [2020-10-15 00:08:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:08:09,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-15 00:08:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:09,688 INFO L225 Difference]: With dead ends: 740 [2020-10-15 00:08:09,688 INFO L226 Difference]: Without dead ends: 501 [2020-10-15 00:08:09,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:09,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-10-15 00:08:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 477. [2020-10-15 00:08:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-15 00:08:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 546 transitions. [2020-10-15 00:08:09,754 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 546 transitions. Word has length 49 [2020-10-15 00:08:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:09,755 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 546 transitions. [2020-10-15 00:08:09,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:08:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 546 transitions. [2020-10-15 00:08:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:08:09,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:09,758 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:09,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-15 00:08:09,758 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:09,759 INFO L82 PathProgramCache]: Analyzing trace with hash 76073369, now seen corresponding path program 50 times [2020-10-15 00:08:09,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:09,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995343821] [2020-10-15 00:08:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:08:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-15 00:08:09,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 00:08:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:08:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:08:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 00:08:09,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:08:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-15 00:08:10,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995343821] [2020-10-15 00:08:10,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:10,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:08:10,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706242646] [2020-10-15 00:08:10,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:08:10,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:10,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:08:10,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:08:10,021 INFO L87 Difference]: Start difference. First operand 477 states and 546 transitions. Second operand 12 states. [2020-10-15 00:08:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:10,397 INFO L93 Difference]: Finished difference Result 597 states and 691 transitions. [2020-10-15 00:08:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:08:10,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-15 00:08:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:10,403 INFO L225 Difference]: With dead ends: 597 [2020-10-15 00:08:10,403 INFO L226 Difference]: Without dead ends: 559 [2020-10-15 00:08:10,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:10,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-15 00:08:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 535. [2020-10-15 00:08:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-15 00:08:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 613 transitions. [2020-10-15 00:08:10,519 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 613 transitions. Word has length 49 [2020-10-15 00:08:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:10,519 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 613 transitions. [2020-10-15 00:08:10,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:08:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 613 transitions. [2020-10-15 00:08:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:08:10,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:10,523 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:10,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-15 00:08:10,523 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2136672174, now seen corresponding path program 51 times [2020-10-15 00:08:10,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:10,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995066321] [2020-10-15 00:08:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:08:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:10,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:10,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:11,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:11,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:11,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:11,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 00:08:11,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:11,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:08:11,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995066321] [2020-10-15 00:08:11,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:11,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:11,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746795229] [2020-10-15 00:08:11,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:11,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:11,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:11,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:11,795 INFO L87 Difference]: Start difference. First operand 535 states and 613 transitions. Second operand 32 states. [2020-10-15 00:08:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:13,045 INFO L93 Difference]: Finished difference Result 627 states and 718 transitions. [2020-10-15 00:08:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:13,048 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 50 [2020-10-15 00:08:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:13,052 INFO L225 Difference]: With dead ends: 627 [2020-10-15 00:08:13,052 INFO L226 Difference]: Without dead ends: 621 [2020-10-15 00:08:13,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:08:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-15 00:08:13,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 551. [2020-10-15 00:08:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-15 00:08:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 632 transitions. [2020-10-15 00:08:13,120 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 632 transitions. Word has length 50 [2020-10-15 00:08:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:13,121 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 632 transitions. [2020-10-15 00:08:13,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 632 transitions. [2020-10-15 00:08:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:08:13,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:13,123 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:08:13,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-15 00:08:13,123 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 36260018, now seen corresponding path program 52 times [2020-10-15 00:08:13,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:13,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723669726] [2020-10-15 00:08:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:13,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:13,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:08:13,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-15 00:08:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:13,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:08:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:08:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:13,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:13,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:13,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:13,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:13,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:13,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:13,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:13,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:13,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 00:08:13,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:13,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:08:14,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723669726] [2020-10-15 00:08:14,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:14,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:14,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535458571] [2020-10-15 00:08:14,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:14,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:14,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:14,320 INFO L87 Difference]: Start difference. First operand 551 states and 632 transitions. Second operand 30 states. [2020-10-15 00:08:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:15,451 INFO L93 Difference]: Finished difference Result 557 states and 637 transitions. [2020-10-15 00:08:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:15,452 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 50 [2020-10-15 00:08:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:15,455 INFO L225 Difference]: With dead ends: 557 [2020-10-15 00:08:15,455 INFO L226 Difference]: Without dead ends: 535 [2020-10-15 00:08:15,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=1613, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:08:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-15 00:08:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2020-10-15 00:08:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-15 00:08:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 614 transitions. [2020-10-15 00:08:15,522 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 614 transitions. Word has length 50 [2020-10-15 00:08:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:15,522 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 614 transitions. [2020-10-15 00:08:15,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 614 transitions. [2020-10-15 00:08:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:08:15,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:15,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:08:15,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-15 00:08:15,526 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:15,527 INFO L82 PathProgramCache]: Analyzing trace with hash 873190610, now seen corresponding path program 53 times [2020-10-15 00:08:15,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:15,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200963137] [2020-10-15 00:08:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:08:16,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-15 00:08:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:08:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:08:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:16,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:16,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-15 00:08:16,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:16,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 00:08:16,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:08:16,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200963137] [2020-10-15 00:08:16,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:16,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:16,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050470640] [2020-10-15 00:08:16,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:16,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:16,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:16,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:16,832 INFO L87 Difference]: Start difference. First operand 535 states and 614 transitions. Second operand 28 states. [2020-10-15 00:08:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:17,853 INFO L93 Difference]: Finished difference Result 541 states and 619 transitions. [2020-10-15 00:08:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:17,853 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 50 [2020-10-15 00:08:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:17,856 INFO L225 Difference]: With dead ends: 541 [2020-10-15 00:08:17,856 INFO L226 Difference]: Without dead ends: 517 [2020-10-15 00:08:17,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=1609, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:08:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-15 00:08:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2020-10-15 00:08:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-15 00:08:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 594 transitions. [2020-10-15 00:08:17,930 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 594 transitions. Word has length 50 [2020-10-15 00:08:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:17,930 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 594 transitions. [2020-10-15 00:08:17,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 594 transitions. [2020-10-15 00:08:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:08:17,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:17,934 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:17,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-15 00:08:17,934 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:17,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash -423467705, now seen corresponding path program 54 times [2020-10-15 00:08:17,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:17,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179808564] [2020-10-15 00:08:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:08:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-15 00:08:18,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:08:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:18,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:18,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:18,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 00:08:18,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:08:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:08:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-15 00:08:18,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179808564] [2020-10-15 00:08:18,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:18,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:08:18,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910111747] [2020-10-15 00:08:18,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:08:18,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:18,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:08:18,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:08:18,375 INFO L87 Difference]: Start difference. First operand 517 states and 594 transitions. Second operand 15 states. [2020-10-15 00:08:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:18,850 INFO L93 Difference]: Finished difference Result 589 states and 680 transitions. [2020-10-15 00:08:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:08:18,851 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-15 00:08:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:18,856 INFO L225 Difference]: With dead ends: 589 [2020-10-15 00:08:18,856 INFO L226 Difference]: Without dead ends: 572 [2020-10-15 00:08:18,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:08:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-15 00:08:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 567. [2020-10-15 00:08:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-15 00:08:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 650 transitions. [2020-10-15 00:08:18,923 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 650 transitions. Word has length 50 [2020-10-15 00:08:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:18,923 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 650 transitions. [2020-10-15 00:08:18,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:08:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 650 transitions. [2020-10-15 00:08:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:08:18,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:18,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:08:18,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-15 00:08:18,927 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2088889394, now seen corresponding path program 55 times [2020-10-15 00:08:18,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:18,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519616069] [2020-10-15 00:08:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:08:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-15 00:08:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:08:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:08:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:19,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:19,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:08:19,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519616069] [2020-10-15 00:08:19,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:19,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:19,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701591998] [2020-10-15 00:08:19,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:19,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:19,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:19,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:19,858 INFO L87 Difference]: Start difference. First operand 567 states and 650 transitions. Second operand 26 states. [2020-10-15 00:08:20,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:20,764 INFO L93 Difference]: Finished difference Result 585 states and 672 transitions. [2020-10-15 00:08:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:08:20,764 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2020-10-15 00:08:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:20,769 INFO L225 Difference]: With dead ends: 585 [2020-10-15 00:08:20,769 INFO L226 Difference]: Without dead ends: 568 [2020-10-15 00:08:20,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=1605, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:08:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-15 00:08:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 563. [2020-10-15 00:08:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-15 00:08:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 647 transitions. [2020-10-15 00:08:20,836 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 647 transitions. Word has length 50 [2020-10-15 00:08:20,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:20,836 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 647 transitions. [2020-10-15 00:08:20,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 647 transitions. [2020-10-15 00:08:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:08:20,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:20,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:20,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-15 00:08:20,841 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:20,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1544738101, now seen corresponding path program 56 times [2020-10-15 00:08:20,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:20,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221907314] [2020-10-15 00:08:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:08:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-15 00:08:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:08:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:21,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:21,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:08:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:21,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-15 00:08:21,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221907314] [2020-10-15 00:08:21,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:21,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:08:21,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187010960] [2020-10-15 00:08:21,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:08:21,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:08:21,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:08:21,331 INFO L87 Difference]: Start difference. First operand 563 states and 647 transitions. Second operand 15 states. [2020-10-15 00:08:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:21,798 INFO L93 Difference]: Finished difference Result 577 states and 660 transitions. [2020-10-15 00:08:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:08:21,799 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-15 00:08:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:21,803 INFO L225 Difference]: With dead ends: 577 [2020-10-15 00:08:21,803 INFO L226 Difference]: Without dead ends: 553 [2020-10-15 00:08:21,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:08:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-15 00:08:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2020-10-15 00:08:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-15 00:08:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 627 transitions. [2020-10-15 00:08:21,876 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 627 transitions. Word has length 50 [2020-10-15 00:08:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:21,877 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 627 transitions. [2020-10-15 00:08:21,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:08:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 627 transitions. [2020-10-15 00:08:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:08:21,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:21,880 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:21,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-15 00:08:21,880 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1847599809, now seen corresponding path program 57 times [2020-10-15 00:08:21,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:21,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450006638] [2020-10-15 00:08:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:08:22,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-15 00:08:22,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:08:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:08:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:22,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:08:22,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450006638] [2020-10-15 00:08:22,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:22,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:08:22,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041734803] [2020-10-15 00:08:22,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:08:22,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:22,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:08:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:08:22,705 INFO L87 Difference]: Start difference. First operand 551 states and 627 transitions. Second operand 23 states. [2020-10-15 00:08:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:23,786 INFO L93 Difference]: Finished difference Result 641 states and 734 transitions. [2020-10-15 00:08:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:08:23,786 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-10-15 00:08:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:23,791 INFO L225 Difference]: With dead ends: 641 [2020-10-15 00:08:23,791 INFO L226 Difference]: Without dead ends: 627 [2020-10-15 00:08:23,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:23,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-15 00:08:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 618. [2020-10-15 00:08:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-15 00:08:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 705 transitions. [2020-10-15 00:08:23,889 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 705 transitions. Word has length 51 [2020-10-15 00:08:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:23,889 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 705 transitions. [2020-10-15 00:08:23,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:08:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 705 transitions. [2020-10-15 00:08:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:08:23,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:23,894 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:23,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-15 00:08:23,894 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1899619432, now seen corresponding path program 58 times [2020-10-15 00:08:23,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:23,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859531273] [2020-10-15 00:08:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:08:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:08:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:24,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:24,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:24,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:24,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:08:24,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859531273] [2020-10-15 00:08:24,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:24,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:08:24,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708637043] [2020-10-15 00:08:24,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:08:24,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:08:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:08:24,698 INFO L87 Difference]: Start difference. First operand 618 states and 705 transitions. Second operand 23 states. [2020-10-15 00:08:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:25,764 INFO L93 Difference]: Finished difference Result 633 states and 720 transitions. [2020-10-15 00:08:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:08:25,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-10-15 00:08:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:25,769 INFO L225 Difference]: With dead ends: 633 [2020-10-15 00:08:25,769 INFO L226 Difference]: Without dead ends: 621 [2020-10-15 00:08:25,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-15 00:08:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 619. [2020-10-15 00:08:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-15 00:08:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 702 transitions. [2020-10-15 00:08:25,841 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 702 transitions. Word has length 51 [2020-10-15 00:08:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:25,842 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 702 transitions. [2020-10-15 00:08:25,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:08:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 702 transitions. [2020-10-15 00:08:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:08:25,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:25,845 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:25,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-15 00:08:25,846 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:25,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1937589319, now seen corresponding path program 59 times [2020-10-15 00:08:25,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:25,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825350439] [2020-10-15 00:08:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:08:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:25,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:26,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:08:26,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:26,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:08:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:08:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 00:08:26,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825350439] [2020-10-15 00:08:26,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:26,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:08:26,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261352831] [2020-10-15 00:08:26,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:08:26,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:08:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:08:26,142 INFO L87 Difference]: Start difference. First operand 619 states and 702 transitions. Second operand 13 states. [2020-10-15 00:08:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:26,478 INFO L93 Difference]: Finished difference Result 653 states and 742 transitions. [2020-10-15 00:08:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:08:26,479 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-15 00:08:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:26,484 INFO L225 Difference]: With dead ends: 653 [2020-10-15 00:08:26,484 INFO L226 Difference]: Without dead ends: 620 [2020-10-15 00:08:26,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:26,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-15 00:08:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 608. [2020-10-15 00:08:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-15 00:08:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 685 transitions. [2020-10-15 00:08:26,566 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 685 transitions. Word has length 51 [2020-10-15 00:08:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:26,566 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 685 transitions. [2020-10-15 00:08:26,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:08:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 685 transitions. [2020-10-15 00:08:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:08:26,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:26,569 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:26,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-15 00:08:26,570 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash -544488514, now seen corresponding path program 60 times [2020-10-15 00:08:26,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:26,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461449677] [2020-10-15 00:08:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:08:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:08:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:26,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:08:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:08:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:08:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 00:08:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 00:08:26,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461449677] [2020-10-15 00:08:26,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:26,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:08:26,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906727861] [2020-10-15 00:08:26,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:08:26,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:08:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:08:26,878 INFO L87 Difference]: Start difference. First operand 608 states and 685 transitions. Second operand 13 states. [2020-10-15 00:08:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:27,212 INFO L93 Difference]: Finished difference Result 945 states and 1053 transitions. [2020-10-15 00:08:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:08:27,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-15 00:08:27,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:27,219 INFO L225 Difference]: With dead ends: 945 [2020-10-15 00:08:27,219 INFO L226 Difference]: Without dead ends: 617 [2020-10-15 00:08:27,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-15 00:08:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2020-10-15 00:08:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-15 00:08:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 694 transitions. [2020-10-15 00:08:27,286 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 694 transitions. Word has length 51 [2020-10-15 00:08:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:27,286 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 694 transitions. [2020-10-15 00:08:27,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:08:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 694 transitions. [2020-10-15 00:08:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:08:27,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:27,291 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:27,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 00:08:27,291 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:27,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1206067897, now seen corresponding path program 61 times [2020-10-15 00:08:27,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:27,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589751206] [2020-10-15 00:08:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:27,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:08:27,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-15 00:08:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:27,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:08:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:08:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:27,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:27,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:28,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:08:28,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:28,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:08:28,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589751206] [2020-10-15 00:08:28,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:28,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:08:28,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319681962] [2020-10-15 00:08:28,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:08:28,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:28,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:08:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:28,654 INFO L87 Difference]: Start difference. First operand 617 states and 694 transitions. Second operand 34 states. [2020-10-15 00:08:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:30,124 INFO L93 Difference]: Finished difference Result 717 states and 807 transitions. [2020-10-15 00:08:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:08:30,124 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 52 [2020-10-15 00:08:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:30,128 INFO L225 Difference]: With dead ends: 717 [2020-10-15 00:08:30,128 INFO L226 Difference]: Without dead ends: 711 [2020-10-15 00:08:30,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=1783, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:08:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-15 00:08:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 633. [2020-10-15 00:08:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-15 00:08:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 713 transitions. [2020-10-15 00:08:30,201 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 713 transitions. Word has length 52 [2020-10-15 00:08:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:30,201 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 713 transitions. [2020-10-15 00:08:30,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:08:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 713 transitions. [2020-10-15 00:08:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:08:30,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:30,204 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:08:30,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 00:08:30,205 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:30,205 INFO L82 PathProgramCache]: Analyzing trace with hash -348617223, now seen corresponding path program 62 times [2020-10-15 00:08:30,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:30,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513088910] [2020-10-15 00:08:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:08:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:08:30,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:30,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:30,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:30,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:30,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:30,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:30,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:08:30,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:30,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:30,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:31,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:31,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:08:31,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513088910] [2020-10-15 00:08:31,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:31,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:31,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223064777] [2020-10-15 00:08:31,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:31,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:31,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:31,484 INFO L87 Difference]: Start difference. First operand 633 states and 713 transitions. Second operand 32 states. [2020-10-15 00:08:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:32,801 INFO L93 Difference]: Finished difference Result 639 states and 718 transitions. [2020-10-15 00:08:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:32,802 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 52 [2020-10-15 00:08:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:32,805 INFO L225 Difference]: With dead ends: 639 [2020-10-15 00:08:32,805 INFO L226 Difference]: Without dead ends: 617 [2020-10-15 00:08:32,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=113, Invalid=1779, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:08:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-15 00:08:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2020-10-15 00:08:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-15 00:08:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 695 transitions. [2020-10-15 00:08:32,911 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 695 transitions. Word has length 52 [2020-10-15 00:08:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:32,911 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 695 transitions. [2020-10-15 00:08:32,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 695 transitions. [2020-10-15 00:08:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:08:32,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:32,916 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:08:32,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 00:08:32,916 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:32,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1376969401, now seen corresponding path program 63 times [2020-10-15 00:08:32,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:32,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113445549] [2020-10-15 00:08:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:08:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:33,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:33,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:33,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:33,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:33,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:33,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:33,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:08:34,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113445549] [2020-10-15 00:08:34,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:34,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:34,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365025572] [2020-10-15 00:08:34,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:34,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:34,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:34,111 INFO L87 Difference]: Start difference. First operand 617 states and 695 transitions. Second operand 30 states. [2020-10-15 00:08:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:35,287 INFO L93 Difference]: Finished difference Result 623 states and 700 transitions. [2020-10-15 00:08:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:35,288 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 52 [2020-10-15 00:08:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:35,291 INFO L225 Difference]: With dead ends: 623 [2020-10-15 00:08:35,292 INFO L226 Difference]: Without dead ends: 599 [2020-10-15 00:08:35,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:08:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-15 00:08:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2020-10-15 00:08:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-10-15 00:08:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 675 transitions. [2020-10-15 00:08:35,377 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 675 transitions. Word has length 52 [2020-10-15 00:08:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:35,378 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 675 transitions. [2020-10-15 00:08:35,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 675 transitions. [2020-10-15 00:08:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:08:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:35,380 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:08:35,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 00:08:35,380 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -46807559, now seen corresponding path program 64 times [2020-10-15 00:08:35,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:35,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113439348] [2020-10-15 00:08:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:08:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:08:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:35,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:35,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:35,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:35,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:35,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:35,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 00:08:35,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:35,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:35,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:36,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:08:36,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113439348] [2020-10-15 00:08:36,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:36,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:36,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961323591] [2020-10-15 00:08:36,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:36,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:36,473 INFO L87 Difference]: Start difference. First operand 599 states and 675 transitions. Second operand 28 states. [2020-10-15 00:08:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:37,554 INFO L93 Difference]: Finished difference Result 605 states and 680 transitions. [2020-10-15 00:08:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:37,555 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2020-10-15 00:08:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:37,577 INFO L225 Difference]: With dead ends: 605 [2020-10-15 00:08:37,577 INFO L226 Difference]: Without dead ends: 579 [2020-10-15 00:08:37,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:08:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-15 00:08:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2020-10-15 00:08:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-15 00:08:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 653 transitions. [2020-10-15 00:08:37,636 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 653 transitions. Word has length 52 [2020-10-15 00:08:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:37,636 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 653 transitions. [2020-10-15 00:08:37,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 653 transitions. [2020-10-15 00:08:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:08:37,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:37,639 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:37,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 00:08:37,639 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1897356615, now seen corresponding path program 65 times [2020-10-15 00:08:37,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:37,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440069395] [2020-10-15 00:08:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:08:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-15 00:08:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:08:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:08:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:37,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:38,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:38,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:38,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:38,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:38,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:38,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 00:08:38,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440069395] [2020-10-15 00:08:38,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:38,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:38,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455256584] [2020-10-15 00:08:38,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:38,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:38,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:38,618 INFO L87 Difference]: Start difference. First operand 579 states and 653 transitions. Second operand 26 states. [2020-10-15 00:08:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:39,592 INFO L93 Difference]: Finished difference Result 597 states and 674 transitions. [2020-10-15 00:08:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:08:39,592 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 52 [2020-10-15 00:08:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:39,596 INFO L225 Difference]: With dead ends: 597 [2020-10-15 00:08:39,597 INFO L226 Difference]: Without dead ends: 591 [2020-10-15 00:08:39,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:08:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-15 00:08:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2020-10-15 00:08:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-15 00:08:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 666 transitions. [2020-10-15 00:08:39,659 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 666 transitions. Word has length 52 [2020-10-15 00:08:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:39,659 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 666 transitions. [2020-10-15 00:08:39,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 666 transitions. [2020-10-15 00:08:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:08:39,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:39,662 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:39,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 00:08:39,662 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1301872712, now seen corresponding path program 66 times [2020-10-15 00:08:39,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:39,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782702240] [2020-10-15 00:08:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:08:39,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-15 00:08:39,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:08:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:08:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:40,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:40,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:40,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:40,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:40,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 00:08:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:40,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:08:40,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782702240] [2020-10-15 00:08:40,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:40,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:08:40,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650478720] [2020-10-15 00:08:40,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:08:40,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:40,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:08:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:08:40,748 INFO L87 Difference]: Start difference. First operand 589 states and 666 transitions. Second operand 25 states. [2020-10-15 00:08:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:42,124 INFO L93 Difference]: Finished difference Result 681 states and 775 transitions. [2020-10-15 00:08:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:08:42,125 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-15 00:08:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:42,132 INFO L225 Difference]: With dead ends: 681 [2020-10-15 00:08:42,133 INFO L226 Difference]: Without dead ends: 667 [2020-10-15 00:08:42,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-15 00:08:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 658. [2020-10-15 00:08:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 00:08:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 746 transitions. [2020-10-15 00:08:42,277 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 746 transitions. Word has length 53 [2020-10-15 00:08:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:42,277 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 746 transitions. [2020-10-15 00:08:42,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:08:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 746 transitions. [2020-10-15 00:08:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:08:42,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:42,280 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:42,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 00:08:42,281 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1380486271, now seen corresponding path program 67 times [2020-10-15 00:08:42,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:42,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658635054] [2020-10-15 00:08:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:08:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:08:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:42,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:42,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:42,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:42,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:08:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:42,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:08:43,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658635054] [2020-10-15 00:08:43,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:43,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:08:43,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819300907] [2020-10-15 00:08:43,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:08:43,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:08:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:08:43,353 INFO L87 Difference]: Start difference. First operand 658 states and 746 transitions. Second operand 25 states. [2020-10-15 00:08:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:44,720 INFO L93 Difference]: Finished difference Result 673 states and 761 transitions. [2020-10-15 00:08:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:08:44,721 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-15 00:08:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:44,726 INFO L225 Difference]: With dead ends: 673 [2020-10-15 00:08:44,726 INFO L226 Difference]: Without dead ends: 661 [2020-10-15 00:08:44,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-15 00:08:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 659. [2020-10-15 00:08:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-15 00:08:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 743 transitions. [2020-10-15 00:08:44,826 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 743 transitions. Word has length 53 [2020-10-15 00:08:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:44,826 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 743 transitions. [2020-10-15 00:08:44,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:08:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 743 transitions. [2020-10-15 00:08:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:08:44,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:44,830 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:44,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 00:08:44,830 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:44,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash -886594786, now seen corresponding path program 68 times [2020-10-15 00:08:44,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:44,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71901545] [2020-10-15 00:08:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:08:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:44,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:45,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:08:45,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:08:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 00:08:45,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71901545] [2020-10-15 00:08:45,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:45,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:08:45,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326411624] [2020-10-15 00:08:45,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:08:45,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:45,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:08:45,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:08:45,163 INFO L87 Difference]: Start difference. First operand 659 states and 743 transitions. Second operand 14 states. [2020-10-15 00:08:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:45,607 INFO L93 Difference]: Finished difference Result 1133 states and 1273 transitions. [2020-10-15 00:08:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:45,608 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-15 00:08:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:45,614 INFO L225 Difference]: With dead ends: 1133 [2020-10-15 00:08:45,614 INFO L226 Difference]: Without dead ends: 771 [2020-10-15 00:08:45,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=385, Invalid=737, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-15 00:08:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 741. [2020-10-15 00:08:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-15 00:08:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 836 transitions. [2020-10-15 00:08:45,699 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 836 transitions. Word has length 53 [2020-10-15 00:08:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:45,699 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 836 transitions. [2020-10-15 00:08:45,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:08:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 836 transitions. [2020-10-15 00:08:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:08:45,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:45,702 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:45,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 00:08:45,702 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:45,703 INFO L82 PathProgramCache]: Analyzing trace with hash -650142791, now seen corresponding path program 69 times [2020-10-15 00:08:45,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:45,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121012501] [2020-10-15 00:08:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:08:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-15 00:08:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 00:08:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:08:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:45,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:08:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:08:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 00:08:46,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121012501] [2020-10-15 00:08:46,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:46,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:08:46,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099048943] [2020-10-15 00:08:46,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:08:46,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:46,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:08:46,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:08:46,053 INFO L87 Difference]: Start difference. First operand 741 states and 836 transitions. Second operand 14 states. [2020-10-15 00:08:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:46,530 INFO L93 Difference]: Finished difference Result 899 states and 1025 transitions. [2020-10-15 00:08:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:46,531 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-15 00:08:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:46,535 INFO L225 Difference]: With dead ends: 899 [2020-10-15 00:08:46,535 INFO L226 Difference]: Without dead ends: 853 [2020-10-15 00:08:46,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=385, Invalid=737, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-15 00:08:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 823. [2020-10-15 00:08:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-15 00:08:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 929 transitions. [2020-10-15 00:08:46,716 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 929 transitions. Word has length 53 [2020-10-15 00:08:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:46,716 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 929 transitions. [2020-10-15 00:08:46,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:08:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 929 transitions. [2020-10-15 00:08:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:08:46,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:46,723 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:46,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-15 00:08:46,724 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash -189870414, now seen corresponding path program 70 times [2020-10-15 00:08:46,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:46,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489753841] [2020-10-15 00:08:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:08:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:08:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:47,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:08:48,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489753841] [2020-10-15 00:08:48,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:48,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:08:48,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723010341] [2020-10-15 00:08:48,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:08:48,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:48,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:08:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:08:48,403 INFO L87 Difference]: Start difference. First operand 823 states and 929 transitions. Second operand 36 states. [2020-10-15 00:08:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:50,142 INFO L93 Difference]: Finished difference Result 939 states and 1060 transitions. [2020-10-15 00:08:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:08:50,143 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 54 [2020-10-15 00:08:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:50,149 INFO L225 Difference]: With dead ends: 939 [2020-10-15 00:08:50,149 INFO L226 Difference]: Without dead ends: 933 [2020-10-15 00:08:50,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=1957, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:08:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-15 00:08:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 839. [2020-10-15 00:08:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-15 00:08:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 948 transitions. [2020-10-15 00:08:50,261 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 948 transitions. Word has length 54 [2020-10-15 00:08:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:50,261 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 948 transitions. [2020-10-15 00:08:50,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:08:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 948 transitions. [2020-10-15 00:08:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:08:50,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:50,265 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:08:50,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-15 00:08:50,265 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1638366318, now seen corresponding path program 71 times [2020-10-15 00:08:50,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:50,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877076266] [2020-10-15 00:08:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:08:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:08:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:50,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:51,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:08:51,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877076266] [2020-10-15 00:08:51,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:51,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:08:51,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856528772] [2020-10-15 00:08:51,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:08:51,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:08:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:51,872 INFO L87 Difference]: Start difference. First operand 839 states and 948 transitions. Second operand 34 states. [2020-10-15 00:08:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:53,538 INFO L93 Difference]: Finished difference Result 845 states and 953 transitions. [2020-10-15 00:08:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:08:53,539 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 54 [2020-10-15 00:08:53,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:53,545 INFO L225 Difference]: With dead ends: 845 [2020-10-15 00:08:53,545 INFO L226 Difference]: Without dead ends: 823 [2020-10-15 00:08:53,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:08:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-15 00:08:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2020-10-15 00:08:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-15 00:08:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 930 transitions. [2020-10-15 00:08:53,666 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 930 transitions. Word has length 54 [2020-10-15 00:08:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:53,667 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 930 transitions. [2020-10-15 00:08:53,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:08:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 930 transitions. [2020-10-15 00:08:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:08:53,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:53,673 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:08:53,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-15 00:08:53,673 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:53,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1469117646, now seen corresponding path program 72 times [2020-10-15 00:08:53,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:53,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326173905] [2020-10-15 00:08:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:08:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:54,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 00:08:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:54,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:08:55,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326173905] [2020-10-15 00:08:55,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:55,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:55,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988934644] [2020-10-15 00:08:55,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:55,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:55,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:55,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:55,196 INFO L87 Difference]: Start difference. First operand 823 states and 930 transitions. Second operand 32 states. [2020-10-15 00:08:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:56,697 INFO L93 Difference]: Finished difference Result 829 states and 935 transitions. [2020-10-15 00:08:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:56,698 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-15 00:08:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:56,704 INFO L225 Difference]: With dead ends: 829 [2020-10-15 00:08:56,704 INFO L226 Difference]: Without dead ends: 805 [2020-10-15 00:08:56,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=1949, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:08:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-15 00:08:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2020-10-15 00:08:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-10-15 00:08:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 910 transitions. [2020-10-15 00:08:56,820 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 910 transitions. Word has length 54 [2020-10-15 00:08:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:56,820 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 910 transitions. [2020-10-15 00:08:56,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 910 transitions. [2020-10-15 00:08:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:08:56,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:56,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 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 00:08:56,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-15 00:08:56,824 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1834367214, now seen corresponding path program 73 times [2020-10-15 00:08:56,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:56,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887539519] [2020-10-15 00:08:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:08:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:08:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:08:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:57,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 00:08:57,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:08:58,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887539519] [2020-10-15 00:08:58,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:58,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:58,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780470493] [2020-10-15 00:08:58,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:58,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:58,212 INFO L87 Difference]: Start difference. First operand 805 states and 910 transitions. Second operand 30 states. [2020-10-15 00:08:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:59,549 INFO L93 Difference]: Finished difference Result 811 states and 915 transitions. [2020-10-15 00:08:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:59,550 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2020-10-15 00:08:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:59,554 INFO L225 Difference]: With dead ends: 811 [2020-10-15 00:08:59,554 INFO L226 Difference]: Without dead ends: 785 [2020-10-15 00:08:59,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=1945, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:08:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-15 00:08:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-10-15 00:08:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-15 00:08:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 888 transitions. [2020-10-15 00:08:59,723 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 888 transitions. Word has length 54 [2020-10-15 00:08:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:59,723 INFO L479 AbstractCegarLoop]: Abstraction has 785 states and 888 transitions. [2020-10-15 00:08:59,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 888 transitions. [2020-10-15 00:08:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:08:59,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:59,727 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:59,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-15 00:08:59,727 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash -294896629, now seen corresponding path program 74 times [2020-10-15 00:08:59,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:59,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205666980] [2020-10-15 00:08:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:08:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:08:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:59,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:59,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:59,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:08:59,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:08:59,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:59,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:59,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:09:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:00,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:00,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 00:09:00,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:00,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:09:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-15 00:09:00,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205666980] [2020-10-15 00:09:00,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:00,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:09:00,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911945690] [2020-10-15 00:09:00,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:09:00,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:00,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:09:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:09:00,366 INFO L87 Difference]: Start difference. First operand 785 states and 888 transitions. Second operand 17 states. [2020-10-15 00:09:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:01,080 INFO L93 Difference]: Finished difference Result 873 states and 994 transitions. [2020-10-15 00:09:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:09:01,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-15 00:09:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:01,091 INFO L225 Difference]: With dead ends: 873 [2020-10-15 00:09:01,091 INFO L226 Difference]: Without dead ends: 855 [2020-10-15 00:09:01,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:09:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-15 00:09:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 850. [2020-10-15 00:09:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-15 00:09:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 961 transitions. [2020-10-15 00:09:01,193 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 961 transitions. Word has length 54 [2020-10-15 00:09:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:01,193 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 961 transitions. [2020-10-15 00:09:01,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:09:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 961 transitions. [2020-10-15 00:09:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:09:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:01,198 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:09:01,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-15 00:09:01,198 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:01,198 INFO L82 PathProgramCache]: Analyzing trace with hash -314685518, now seen corresponding path program 75 times [2020-10-15 00:09:01,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:01,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078397237] [2020-10-15 00:09:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:09:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:01,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:09:01,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:02,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:09:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:09:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-15 00:09:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:02,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:09:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 00:09:02,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078397237] [2020-10-15 00:09:02,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:02,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:09:02,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110678401] [2020-10-15 00:09:02,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:09:02,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:02,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:09:02,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:09:02,714 INFO L87 Difference]: Start difference. First operand 850 states and 961 transitions. Second operand 28 states. [2020-10-15 00:09:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:03,952 INFO L93 Difference]: Finished difference Result 868 states and 983 transitions. [2020-10-15 00:09:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:09:03,953 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2020-10-15 00:09:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:03,960 INFO L225 Difference]: With dead ends: 868 [2020-10-15 00:09:03,960 INFO L226 Difference]: Without dead ends: 850 [2020-10-15 00:09:03,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=1941, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:09:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-15 00:09:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 845. [2020-10-15 00:09:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-15 00:09:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 957 transitions. [2020-10-15 00:09:04,078 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 957 transitions. Word has length 54 [2020-10-15 00:09:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:04,078 INFO L479 AbstractCegarLoop]: Abstraction has 845 states and 957 transitions. [2020-10-15 00:09:04,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:09:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 957 transitions. [2020-10-15 00:09:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:09:04,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:04,083 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:04,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-15 00:09:04,084 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1555012935, now seen corresponding path program 76 times [2020-10-15 00:09:04,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:04,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985514420] [2020-10-15 00:09:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:09:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:09:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:09:04,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:09:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:09:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:09:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-15 00:09:04,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985514420] [2020-10-15 00:09:04,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:04,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:09:04,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942669474] [2020-10-15 00:09:04,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:09:04,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:04,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:09:04,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:09:04,697 INFO L87 Difference]: Start difference. First operand 845 states and 957 transitions. Second operand 17 states. [2020-10-15 00:09:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:05,419 INFO L93 Difference]: Finished difference Result 859 states and 970 transitions. [2020-10-15 00:09:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:09:05,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-15 00:09:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:05,426 INFO L225 Difference]: With dead ends: 859 [2020-10-15 00:09:05,426 INFO L226 Difference]: Without dead ends: 833 [2020-10-15 00:09:05,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:09:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-15 00:09:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 831. [2020-10-15 00:09:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-15 00:09:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 933 transitions. [2020-10-15 00:09:05,526 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 933 transitions. Word has length 54 [2020-10-15 00:09:05,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:05,526 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 933 transitions. [2020-10-15 00:09:05,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:09:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 933 transitions. [2020-10-15 00:09:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:09:05,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:05,532 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:05,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-15 00:09:05,532 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1626287393, now seen corresponding path program 77 times [2020-10-15 00:09:05,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:05,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930911814] [2020-10-15 00:09:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:09:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:09:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:09:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:05,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:09:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 00:09:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:06,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:09:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 00:09:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:06,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:09:06,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930911814] [2020-10-15 00:09:06,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:06,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:09:06,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909935700] [2020-10-15 00:09:06,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:09:06,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:09:06,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:09:06,753 INFO L87 Difference]: Start difference. First operand 831 states and 933 transitions. Second operand 27 states. [2020-10-15 00:09:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:08,502 INFO L93 Difference]: Finished difference Result 947 states and 1070 transitions. [2020-10-15 00:09:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:09:08,503 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 55 [2020-10-15 00:09:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:08,510 INFO L225 Difference]: With dead ends: 947 [2020-10-15 00:09:08,510 INFO L226 Difference]: Without dead ends: 933 [2020-10-15 00:09:08,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:09:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-15 00:09:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 924. [2020-10-15 00:09:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-10-15 00:09:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1040 transitions. [2020-10-15 00:09:08,627 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1040 transitions. Word has length 55 [2020-10-15 00:09:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:08,627 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1040 transitions. [2020-10-15 00:09:08,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:09:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1040 transitions. [2020-10-15 00:09:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:09:08,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:08,633 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:08,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-15 00:09:08,634 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash -77537544, now seen corresponding path program 78 times [2020-10-15 00:09:08,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:08,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043264246] [2020-10-15 00:09:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:08,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:09:08,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-15 00:09:08,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:08,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:09:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:09:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:09:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:09,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:09,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:09,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:09,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:09,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:09:09,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043264246] [2020-10-15 00:09:09,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:09,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:09:09,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714597165] [2020-10-15 00:09:09,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:09:09,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:09,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:09:09,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:09:09,872 INFO L87 Difference]: Start difference. First operand 924 states and 1040 transitions. Second operand 27 states. [2020-10-15 00:09:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:11,544 INFO L93 Difference]: Finished difference Result 939 states and 1055 transitions. [2020-10-15 00:09:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:09:11,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 55 [2020-10-15 00:09:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:11,550 INFO L225 Difference]: With dead ends: 939 [2020-10-15 00:09:11,550 INFO L226 Difference]: Without dead ends: 927 [2020-10-15 00:09:11,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:09:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-15 00:09:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 925. [2020-10-15 00:09:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-10-15 00:09:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1036 transitions. [2020-10-15 00:09:11,668 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1036 transitions. Word has length 55 [2020-10-15 00:09:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:11,668 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1036 transitions. [2020-10-15 00:09:11,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:09:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1036 transitions. [2020-10-15 00:09:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:09:11,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:11,678 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:11,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-15 00:09:11,678 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1820981415, now seen corresponding path program 79 times [2020-10-15 00:09:11,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:11,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314657338] [2020-10-15 00:09:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:09:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-15 00:09:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 00:09:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:09:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:11,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:09:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 00:09:12,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314657338] [2020-10-15 00:09:12,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:12,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:09:12,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949661067] [2020-10-15 00:09:12,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:09:12,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:09:12,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:09:12,141 INFO L87 Difference]: Start difference. First operand 925 states and 1036 transitions. Second operand 15 states. [2020-10-15 00:09:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:12,703 INFO L93 Difference]: Finished difference Result 967 states and 1086 transitions. [2020-10-15 00:09:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:09:12,704 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-15 00:09:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:12,710 INFO L225 Difference]: With dead ends: 967 [2020-10-15 00:09:12,710 INFO L226 Difference]: Without dead ends: 928 [2020-10-15 00:09:12,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=448, Invalid=812, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-10-15 00:09:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 916. [2020-10-15 00:09:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-10-15 00:09:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1021 transitions. [2020-10-15 00:09:12,871 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1021 transitions. Word has length 55 [2020-10-15 00:09:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:12,871 INFO L479 AbstractCegarLoop]: Abstraction has 916 states and 1021 transitions. [2020-10-15 00:09:12,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:09:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1021 transitions. [2020-10-15 00:09:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:09:12,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:12,877 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:12,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-15 00:09:12,877 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1914468606, now seen corresponding path program 80 times [2020-10-15 00:09:12,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:12,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211052843] [2020-10-15 00:09:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:13,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:09:13,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-15 00:09:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:13,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:09:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:13,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:13,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:13,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:13,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:13,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:09:13,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:09:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:09:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:13,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:13,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:09:13,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:13,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:09:13,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 00:09:13,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211052843] [2020-10-15 00:09:13,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:13,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:09:13,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440407606] [2020-10-15 00:09:13,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:09:13,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:09:13,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:09:13,431 INFO L87 Difference]: Start difference. First operand 916 states and 1021 transitions. Second operand 15 states. [2020-10-15 00:09:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:13,963 INFO L93 Difference]: Finished difference Result 1409 states and 1552 transitions. [2020-10-15 00:09:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:09:13,963 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-15 00:09:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:13,971 INFO L225 Difference]: With dead ends: 1409 [2020-10-15 00:09:13,971 INFO L226 Difference]: Without dead ends: 927 [2020-10-15 00:09:13,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=448, Invalid=812, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-15 00:09:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-10-15 00:09:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-15 00:09:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1032 transitions. [2020-10-15 00:09:14,091 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1032 transitions. Word has length 55 [2020-10-15 00:09:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:14,091 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1032 transitions. [2020-10-15 00:09:14,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:09:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1032 transitions. [2020-10-15 00:09:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:09:14,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:14,097 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:14,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-15 00:09:14,097 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1856031577, now seen corresponding path program 81 times [2020-10-15 00:09:14,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:14,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102288848] [2020-10-15 00:09:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:14,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:09:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:14,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:14,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:14,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:14,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:14,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:15,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:09:16,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102288848] [2020-10-15 00:09:16,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:16,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:16,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724093583] [2020-10-15 00:09:16,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:16,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:16,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:16,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:16,048 INFO L87 Difference]: Start difference. First operand 927 states and 1032 transitions. Second operand 38 states. [2020-10-15 00:09:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:18,015 INFO L93 Difference]: Finished difference Result 1051 states and 1171 transitions. [2020-10-15 00:09:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:09:18,016 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 56 [2020-10-15 00:09:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:18,023 INFO L225 Difference]: With dead ends: 1051 [2020-10-15 00:09:18,023 INFO L226 Difference]: Without dead ends: 1045 [2020-10-15 00:09:18,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=2139, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:09:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-15 00:09:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 943. [2020-10-15 00:09:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-15 00:09:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1051 transitions. [2020-10-15 00:09:18,169 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1051 transitions. Word has length 56 [2020-10-15 00:09:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:18,170 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1051 transitions. [2020-10-15 00:09:18,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1051 transitions. [2020-10-15 00:09:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:09:18,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:18,175 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:09:18,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-15 00:09:18,175 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:18,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1440959257, now seen corresponding path program 82 times [2020-10-15 00:09:18,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:18,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182410299] [2020-10-15 00:09:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:09:18,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:18,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-15 00:09:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:18,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:09:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:09:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:18,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:18,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-15 00:09:18,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:18,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:18,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:09:18,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:18,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:09:20,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182410299] [2020-10-15 00:09:20,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:20,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:09:20,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243938352] [2020-10-15 00:09:20,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:09:20,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:20,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:09:20,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:20,210 INFO L87 Difference]: Start difference. First operand 943 states and 1051 transitions. Second operand 36 states. [2020-10-15 00:09:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:22,000 INFO L93 Difference]: Finished difference Result 949 states and 1056 transitions. [2020-10-15 00:09:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:09:22,001 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 56 [2020-10-15 00:09:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:22,005 INFO L225 Difference]: With dead ends: 949 [2020-10-15 00:09:22,006 INFO L226 Difference]: Without dead ends: 927 [2020-10-15 00:09:22,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:09:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-15 00:09:22,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-10-15 00:09:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-15 00:09:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1033 transitions. [2020-10-15 00:09:22,167 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1033 transitions. Word has length 56 [2020-10-15 00:09:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:22,168 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1033 transitions. [2020-10-15 00:09:22,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:09:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1033 transitions. [2020-10-15 00:09:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:09:22,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:22,175 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:09:22,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-15 00:09:22,175 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:22,176 INFO L82 PathProgramCache]: Analyzing trace with hash -157217959, now seen corresponding path program 83 times [2020-10-15 00:09:22,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:22,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950038129] [2020-10-15 00:09:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:09:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:22,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:09:22,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:22,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:22,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:22,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:22,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:22,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:09:23,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950038129] [2020-10-15 00:09:23,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:23,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:09:23,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542000073] [2020-10-15 00:09:23,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:09:23,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:09:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:09:23,834 INFO L87 Difference]: Start difference. First operand 927 states and 1033 transitions. Second operand 34 states. [2020-10-15 00:09:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:25,590 INFO L93 Difference]: Finished difference Result 933 states and 1038 transitions. [2020-10-15 00:09:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:09:25,591 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 56 [2020-10-15 00:09:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:25,596 INFO L225 Difference]: With dead ends: 933 [2020-10-15 00:09:25,597 INFO L226 Difference]: Without dead ends: 909 [2020-10-15 00:09:25,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:09:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-10-15 00:09:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2020-10-15 00:09:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-10-15 00:09:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1013 transitions. [2020-10-15 00:09:25,805 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1013 transitions. Word has length 56 [2020-10-15 00:09:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:25,805 INFO L479 AbstractCegarLoop]: Abstraction has 909 states and 1013 transitions. [2020-10-15 00:09:25,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:09:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1013 transitions. [2020-10-15 00:09:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:09:25,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:25,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 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 00:09:25,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-15 00:09:25,813 INFO L427 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:25,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1925319449, now seen corresponding path program 84 times [2020-10-15 00:09:25,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:25,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719715980] [2020-10-15 00:09:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:25,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:26,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:26,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:09:26,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:26,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-15 00:09:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:26,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:09:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:09:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:26,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:26,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:26,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:26,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:26,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:26,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:09:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:26,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:09:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:26,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:09:27,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719715980] [2020-10-15 00:09:27,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:27,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:09:27,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116254897] [2020-10-15 00:09:27,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:09:27,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:09:27,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:09:27,487 INFO L87 Difference]: Start difference. First operand 909 states and 1013 transitions. Second operand 32 states. [2020-10-15 00:09:29,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:29,041 INFO L93 Difference]: Finished difference Result 915 states and 1018 transitions. [2020-10-15 00:09:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:09:29,047 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 56 [2020-10-15 00:09:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:29,052 INFO L225 Difference]: With dead ends: 915 [2020-10-15 00:09:29,052 INFO L226 Difference]: Without dead ends: 889 [2020-10-15 00:09:29,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=129, Invalid=2127, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:09:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-10-15 00:09:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2020-10-15 00:09:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-15 00:09:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 991 transitions. [2020-10-15 00:09:29,163 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 991 transitions. Word has length 56 [2020-10-15 00:09:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:29,163 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 991 transitions. [2020-10-15 00:09:29,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:09:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 991 transitions. [2020-10-15 00:09:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:09:29,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:29,168 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:09:29,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-15 00:09:29,168 INFO L427 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1508068185, now seen corresponding path program 85 times [2020-10-15 00:09:29,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:29,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007496227] [2020-10-15 00:09:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:09:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:29,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:29,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:29,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:29,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:29,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-15 00:09:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:29,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:09:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:30,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:30,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:09:30,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:30,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:09:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 00:09:30,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007496227] [2020-10-15 00:09:30,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:30,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:09:30,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373859226] [2020-10-15 00:09:30,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:09:30,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:30,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:09:30,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:09:30,748 INFO L87 Difference]: Start difference. First operand 889 states and 991 transitions. Second operand 30 states. [2020-10-15 00:09:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:32,120 INFO L93 Difference]: Finished difference Result 895 states and 996 transitions. [2020-10-15 00:09:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:09:32,120 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-10-15 00:09:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:32,155 INFO L225 Difference]: With dead ends: 895 [2020-10-15 00:09:32,155 INFO L226 Difference]: Without dead ends: 867 [2020-10-15 00:09:32,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=2123, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:09:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-10-15 00:09:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2020-10-15 00:09:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-15 00:09:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 967 transitions. [2020-10-15 00:09:32,352 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 967 transitions. Word has length 56 [2020-10-15 00:09:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:32,352 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 967 transitions. [2020-10-15 00:09:32,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:09:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 967 transitions. [2020-10-15 00:09:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:09:32,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:32,360 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:32,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2020-10-15 00:09:32,360 INFO L427 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1717488409, now seen corresponding path program 86 times [2020-10-15 00:09:32,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:32,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323724399] [2020-10-15 00:09:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:09:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-15 00:09:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:32,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:09:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:09:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:32,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:32,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:09:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:33,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:33,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 00:09:33,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:33,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:09:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 00:09:33,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323724399] [2020-10-15 00:09:33,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:33,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:09:33,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652237688] [2020-10-15 00:09:33,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:09:33,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:33,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:09:33,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:09:33,818 INFO L87 Difference]: Start difference. First operand 867 states and 967 transitions. Second operand 28 states. [2020-10-15 00:09:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:35,145 INFO L93 Difference]: Finished difference Result 885 states and 988 transitions. [2020-10-15 00:09:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:09:35,146 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-10-15 00:09:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:35,152 INFO L225 Difference]: With dead ends: 885 [2020-10-15 00:09:35,153 INFO L226 Difference]: Without dead ends: 879 [2020-10-15 00:09:35,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:09:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-10-15 00:09:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-10-15 00:09:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-15 00:09:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 980 transitions. [2020-10-15 00:09:35,347 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 980 transitions. Word has length 56 [2020-10-15 00:09:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:35,347 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 980 transitions. [2020-10-15 00:09:35,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:09:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 980 transitions. [2020-10-15 00:09:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:09:35,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:35,356 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:35,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2020-10-15 00:09:35,356 INFO L427 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1667132184, now seen corresponding path program 87 times [2020-10-15 00:09:35,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:35,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190325979] [2020-10-15 00:09:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:09:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:09:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:09:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:35,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:35,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:35,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:35,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:35,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:35,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:35,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:09:35,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:35,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:36,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:09:36,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190325979] [2020-10-15 00:09:36,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:36,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:09:36,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369985875] [2020-10-15 00:09:36,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:09:36,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:36,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:09:36,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:09:36,703 INFO L87 Difference]: Start difference. First operand 877 states and 980 transitions. Second operand 29 states. [2020-10-15 00:09:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:38,670 INFO L93 Difference]: Finished difference Result 995 states and 1119 transitions. [2020-10-15 00:09:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:09:38,671 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2020-10-15 00:09:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:38,679 INFO L225 Difference]: With dead ends: 995 [2020-10-15 00:09:38,679 INFO L226 Difference]: Without dead ends: 981 [2020-10-15 00:09:38,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:09:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-10-15 00:09:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 972. [2020-10-15 00:09:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-15 00:09:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1089 transitions. [2020-10-15 00:09:38,812 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1089 transitions. Word has length 57 [2020-10-15 00:09:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:38,812 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1089 transitions. [2020-10-15 00:09:38,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:09:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1089 transitions. [2020-10-15 00:09:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:09:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:38,817 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:38,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-15 00:09:38,818 INFO L427 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1861230049, now seen corresponding path program 88 times [2020-10-15 00:09:38,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:38,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063178317] [2020-10-15 00:09:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:39,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:09:39,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-15 00:09:39,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:39,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:09:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:09:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:09:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:39,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:39,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:39,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:39,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:39,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:39,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:09:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:09:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:09:40,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063178317] [2020-10-15 00:09:40,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:40,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:09:40,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870317811] [2020-10-15 00:09:40,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:09:40,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:40,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:09:40,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:09:40,170 INFO L87 Difference]: Start difference. First operand 972 states and 1089 transitions. Second operand 29 states. [2020-10-15 00:09:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:42,067 INFO L93 Difference]: Finished difference Result 987 states and 1104 transitions. [2020-10-15 00:09:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:09:42,069 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2020-10-15 00:09:42,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:42,074 INFO L225 Difference]: With dead ends: 987 [2020-10-15 00:09:42,074 INFO L226 Difference]: Without dead ends: 975 [2020-10-15 00:09:42,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:09:42,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-15 00:09:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2020-10-15 00:09:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-15 00:09:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1085 transitions. [2020-10-15 00:09:42,208 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1085 transitions. Word has length 57 [2020-10-15 00:09:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:42,208 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1085 transitions. [2020-10-15 00:09:42,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:09:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1085 transitions. [2020-10-15 00:09:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:09:42,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:42,214 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:42,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-15 00:09:42,214 INFO L427 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1655961118, now seen corresponding path program 89 times [2020-10-15 00:09:42,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:42,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796720654] [2020-10-15 00:09:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:42,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:09:42,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-15 00:09:42,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:09:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:42,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:42,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:42,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:42,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:42,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:09:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:09:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:42,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:09:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 00:09:42,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796720654] [2020-10-15 00:09:42,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:42,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:09:42,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297058662] [2020-10-15 00:09:42,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:09:42,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:42,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:09:42,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:09:42,706 INFO L87 Difference]: Start difference. First operand 973 states and 1085 transitions. Second operand 16 states. [2020-10-15 00:09:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:43,414 INFO L93 Difference]: Finished difference Result 1639 states and 1818 transitions. [2020-10-15 00:09:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:09:43,415 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-15 00:09:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:43,427 INFO L225 Difference]: With dead ends: 1639 [2020-10-15 00:09:43,427 INFO L226 Difference]: Without dead ends: 1119 [2020-10-15 00:09:43,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=616, Invalid=1190, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:09:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2020-10-15 00:09:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1083. [2020-10-15 00:09:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-15 00:09:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1208 transitions. [2020-10-15 00:09:43,581 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1208 transitions. Word has length 57 [2020-10-15 00:09:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:43,581 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1208 transitions. [2020-10-15 00:09:43,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:09:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1208 transitions. [2020-10-15 00:09:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:09:43,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:43,586 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:43,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-15 00:09:43,587 INFO L427 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:43,587 INFO L82 PathProgramCache]: Analyzing trace with hash -259096743, now seen corresponding path program 90 times [2020-10-15 00:09:43,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:43,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736694824] [2020-10-15 00:09:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:43,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:09:43,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-15 00:09:43,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:43,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 00:09:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:09:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:43,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:43,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:43,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:43,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:43,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:43,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:43,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:09:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:43,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:09:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:43,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:43,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:09:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 00:09:44,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736694824] [2020-10-15 00:09:44,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:44,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:09:44,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344916506] [2020-10-15 00:09:44,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:09:44,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:09:44,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:09:44,034 INFO L87 Difference]: Start difference. First operand 1083 states and 1208 transitions. Second operand 16 states. [2020-10-15 00:09:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:44,868 INFO L93 Difference]: Finished difference Result 1283 states and 1445 transitions. [2020-10-15 00:09:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:09:44,868 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-15 00:09:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:44,875 INFO L225 Difference]: With dead ends: 1283 [2020-10-15 00:09:44,876 INFO L226 Difference]: Without dead ends: 1229 [2020-10-15 00:09:44,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=616, Invalid=1190, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:09:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-15 00:09:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1193. [2020-10-15 00:09:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-10-15 00:09:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1331 transitions. [2020-10-15 00:09:45,070 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1331 transitions. Word has length 57 [2020-10-15 00:09:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:45,070 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1331 transitions. [2020-10-15 00:09:45,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:09:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1331 transitions. [2020-10-15 00:09:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:09:45,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:45,079 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:45,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-15 00:09:45,079 INFO L427 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:45,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1898828526, now seen corresponding path program 91 times [2020-10-15 00:09:45,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:45,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790463315] [2020-10-15 00:09:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:45,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:09:45,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:45,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:45,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:45,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:46,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:09:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:46,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:09:47,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790463315] [2020-10-15 00:09:47,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:47,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:09:47,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028069420] [2020-10-15 00:09:47,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:09:47,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:47,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:09:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:09:47,307 INFO L87 Difference]: Start difference. First operand 1193 states and 1331 transitions. Second operand 40 states. [2020-10-15 00:09:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:49,636 INFO L93 Difference]: Finished difference Result 1335 states and 1490 transitions. [2020-10-15 00:09:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:09:49,637 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 58 [2020-10-15 00:09:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:49,646 INFO L225 Difference]: With dead ends: 1335 [2020-10-15 00:09:49,646 INFO L226 Difference]: Without dead ends: 1329 [2020-10-15 00:09:49,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=2329, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:09:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-15 00:09:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1209. [2020-10-15 00:09:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-15 00:09:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1350 transitions. [2020-10-15 00:09:49,826 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1350 transitions. Word has length 58 [2020-10-15 00:09:49,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:49,826 INFO L479 AbstractCegarLoop]: Abstraction has 1209 states and 1350 transitions. [2020-10-15 00:09:49,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:09:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1350 transitions. [2020-10-15 00:09:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:09:49,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:49,833 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:09:49,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2020-10-15 00:09:49,834 INFO L427 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:49,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1746925966, now seen corresponding path program 92 times [2020-10-15 00:09:49,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:49,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801027276] [2020-10-15 00:09:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:09:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:50,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:50,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:50,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:50,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:50,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:50,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:09:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:09:51,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801027276] [2020-10-15 00:09:51,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:51,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:51,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915867093] [2020-10-15 00:09:51,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:51,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:51,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:51,957 INFO L87 Difference]: Start difference. First operand 1209 states and 1350 transitions. Second operand 38 states. [2020-10-15 00:09:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:54,052 INFO L93 Difference]: Finished difference Result 1215 states and 1355 transitions. [2020-10-15 00:09:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:09:54,053 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 58 [2020-10-15 00:09:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:54,060 INFO L225 Difference]: With dead ends: 1215 [2020-10-15 00:09:54,061 INFO L226 Difference]: Without dead ends: 1193 [2020-10-15 00:09:54,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=2325, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:09:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-15 00:09:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1193. [2020-10-15 00:09:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-10-15 00:09:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1332 transitions. [2020-10-15 00:09:54,248 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1332 transitions. Word has length 58 [2020-10-15 00:09:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:54,248 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1332 transitions. [2020-10-15 00:09:54,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1332 transitions. [2020-10-15 00:09:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:09:54,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:54,256 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:09:54,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2020-10-15 00:09:54,256 INFO L427 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:54,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:54,257 INFO L82 PathProgramCache]: Analyzing trace with hash 702007698, now seen corresponding path program 93 times [2020-10-15 00:09:54,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:54,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396419877] [2020-10-15 00:09:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:54,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:54,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:09:54,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-15 00:09:54,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:54,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:09:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:09:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:55,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:55,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:55,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:55,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:55,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:55,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:55,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:55,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 00:09:55,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:55,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:09:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:55,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:09:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:09:56,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396419877] [2020-10-15 00:09:56,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:56,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:09:56,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081040961] [2020-10-15 00:09:56,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:09:56,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:56,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:09:56,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:56,359 INFO L87 Difference]: Start difference. First operand 1193 states and 1332 transitions. Second operand 36 states. [2020-10-15 00:09:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:58,378 INFO L93 Difference]: Finished difference Result 1199 states and 1337 transitions. [2020-10-15 00:09:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:09:58,379 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 58 [2020-10-15 00:09:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:58,387 INFO L225 Difference]: With dead ends: 1199 [2020-10-15 00:09:58,387 INFO L226 Difference]: Without dead ends: 1175 [2020-10-15 00:09:58,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=129, Invalid=2321, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:09:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-10-15 00:09:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2020-10-15 00:09:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-10-15 00:09:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1312 transitions. [2020-10-15 00:09:58,612 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1312 transitions. Word has length 58 [2020-10-15 00:09:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:58,612 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1312 transitions. [2020-10-15 00:09:58,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:09:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1312 transitions. [2020-10-15 00:09:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:09:58,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:58,619 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 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 00:09:58,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2020-10-15 00:09:58,619 INFO L427 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:58,619 INFO L82 PathProgramCache]: Analyzing trace with hash -901912078, now seen corresponding path program 94 times [2020-10-15 00:09:58,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:58,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271411940] [2020-10-15 00:09:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:09:59,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-15 00:09:59,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:09:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:09:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:09:59,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:59,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:59,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:09:59,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:09:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:09:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-15 00:09:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:09:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:09:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:10:00,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271411940] [2020-10-15 00:10:00,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:00,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:10:00,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370559298] [2020-10-15 00:10:00,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:10:00,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:00,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:10:00,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:10:00,541 INFO L87 Difference]: Start difference. First operand 1175 states and 1312 transitions. Second operand 34 states. [2020-10-15 00:10:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:02,331 INFO L93 Difference]: Finished difference Result 1181 states and 1317 transitions. [2020-10-15 00:10:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:10:02,332 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 58 [2020-10-15 00:10:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:02,338 INFO L225 Difference]: With dead ends: 1181 [2020-10-15 00:10:02,338 INFO L226 Difference]: Without dead ends: 1155 [2020-10-15 00:10:02,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=2317, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:10:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2020-10-15 00:10:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2020-10-15 00:10:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-10-15 00:10:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1290 transitions. [2020-10-15 00:10:02,511 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1290 transitions. Word has length 58 [2020-10-15 00:10:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:02,511 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1290 transitions. [2020-10-15 00:10:02,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:10:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1290 transitions. [2020-10-15 00:10:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:10:02,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:02,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 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 00:10:02,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2020-10-15 00:10:02,518 INFO L427 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:02,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2000132590, now seen corresponding path program 95 times [2020-10-15 00:10:02,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:02,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734338886] [2020-10-15 00:10:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:10:03,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-15 00:10:03,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:03,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:10:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:10:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:03,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:03,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:03,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:10:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:10:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:03,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 00:10:03,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:03,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:10:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 00:10:04,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734338886] [2020-10-15 00:10:04,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:04,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:10:04,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011273363] [2020-10-15 00:10:04,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:10:04,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:10:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:10:04,289 INFO L87 Difference]: Start difference. First operand 1155 states and 1290 transitions. Second operand 32 states. [2020-10-15 00:10:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:05,985 INFO L93 Difference]: Finished difference Result 1161 states and 1295 transitions. [2020-10-15 00:10:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:10:05,987 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 58 [2020-10-15 00:10:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:05,993 INFO L225 Difference]: With dead ends: 1161 [2020-10-15 00:10:05,994 INFO L226 Difference]: Without dead ends: 1133 [2020-10-15 00:10:06,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=137, Invalid=2313, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:10:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2020-10-15 00:10:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2020-10-15 00:10:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-15 00:10:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1266 transitions. [2020-10-15 00:10:06,277 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1266 transitions. Word has length 58 [2020-10-15 00:10:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:06,277 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1266 transitions. [2020-10-15 00:10:06,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:10:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1266 transitions. [2020-10-15 00:10:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:10:06,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:06,285 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:06,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2020-10-15 00:10:06,285 INFO L427 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 742392839, now seen corresponding path program 96 times [2020-10-15 00:10:06,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:06,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041584995] [2020-10-15 00:10:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:10:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:10:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:06,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:06,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:06,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:06,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:06,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:06,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:10:06,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:10:06,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:06,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:10:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:10:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:06,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:06,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 00:10:07,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041584995] [2020-10-15 00:10:07,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:07,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:10:07,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564575834] [2020-10-15 00:10:07,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:10:07,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:07,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:10:07,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:10:07,005 INFO L87 Difference]: Start difference. First operand 1133 states and 1266 transitions. Second operand 19 states. [2020-10-15 00:10:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:07,985 INFO L93 Difference]: Finished difference Result 1237 states and 1392 transitions. [2020-10-15 00:10:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:10:07,986 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-15 00:10:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:08,000 INFO L225 Difference]: With dead ends: 1237 [2020-10-15 00:10:08,000 INFO L226 Difference]: Without dead ends: 1218 [2020-10-15 00:10:08,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:10:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-15 00:10:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1213. [2020-10-15 00:10:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-15 00:10:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1356 transitions. [2020-10-15 00:10:08,176 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1356 transitions. Word has length 58 [2020-10-15 00:10:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:08,176 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1356 transitions. [2020-10-15 00:10:08,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:10:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1356 transitions. [2020-10-15 00:10:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:10:08,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:08,183 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:10:08,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2020-10-15 00:10:08,184 INFO L427 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:08,184 INFO L82 PathProgramCache]: Analyzing trace with hash 21810546, now seen corresponding path program 97 times [2020-10-15 00:10:08,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:08,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555410296] [2020-10-15 00:10:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:10:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-15 00:10:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:08,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:10:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:10:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:08,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:08,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:08,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:08,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:08,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:08,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:10:08,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:08,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:10:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:10:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:10:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:09,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:09,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:09,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 00:10:09,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:09,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:10:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 00:10:09,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555410296] [2020-10-15 00:10:09,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:09,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:10:09,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532719202] [2020-10-15 00:10:09,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:10:09,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:10:09,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:10:09,740 INFO L87 Difference]: Start difference. First operand 1213 states and 1356 transitions. Second operand 30 states. [2020-10-15 00:10:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:11,355 INFO L93 Difference]: Finished difference Result 1231 states and 1378 transitions. [2020-10-15 00:10:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:10:11,356 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2020-10-15 00:10:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:11,364 INFO L225 Difference]: With dead ends: 1231 [2020-10-15 00:10:11,364 INFO L226 Difference]: Without dead ends: 1212 [2020-10-15 00:10:11,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=141, Invalid=2309, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:10:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-15 00:10:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1207. [2020-10-15 00:10:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-10-15 00:10:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1351 transitions. [2020-10-15 00:10:11,545 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1351 transitions. Word has length 58 [2020-10-15 00:10:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:11,545 INFO L479 AbstractCegarLoop]: Abstraction has 1207 states and 1351 transitions. [2020-10-15 00:10:11,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:10:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1351 transitions. [2020-10-15 00:10:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:10:11,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:11,553 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:11,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2020-10-15 00:10:11,553 INFO L427 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash -662124661, now seen corresponding path program 98 times [2020-10-15 00:10:11,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:11,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464832474] [2020-10-15 00:10:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:10:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:10:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:11,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:11,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:10:11,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:11,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:10:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:10:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:10:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:10:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 00:10:12,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464832474] [2020-10-15 00:10:12,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:12,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:10:12,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622630528] [2020-10-15 00:10:12,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:10:12,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:12,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:10:12,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:10:12,285 INFO L87 Difference]: Start difference. First operand 1207 states and 1351 transitions. Second operand 19 states. [2020-10-15 00:10:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:13,261 INFO L93 Difference]: Finished difference Result 1221 states and 1364 transitions. [2020-10-15 00:10:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:10:13,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-15 00:10:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:13,268 INFO L225 Difference]: With dead ends: 1221 [2020-10-15 00:10:13,268 INFO L226 Difference]: Without dead ends: 1193 [2020-10-15 00:10:13,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:10:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-15 00:10:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1191. [2020-10-15 00:10:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-15 00:10:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1323 transitions. [2020-10-15 00:10:13,442 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1323 transitions. Word has length 58 [2020-10-15 00:10:13,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:13,442 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1323 transitions. [2020-10-15 00:10:13,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:10:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1323 transitions. [2020-10-15 00:10:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:10:13,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:13,450 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:13,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2020-10-15 00:10:13,451 INFO L427 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:13,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:13,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1230585983, now seen corresponding path program 99 times [2020-10-15 00:10:13,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:13,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370992589] [2020-10-15 00:10:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:10:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-15 00:10:13,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:13,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:10:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:10:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:13,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:13,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:13,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:13,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:13,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:14,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:14,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:10:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:14,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 00:10:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:14,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:10:15,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370992589] [2020-10-15 00:10:15,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:15,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:10:15,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050293998] [2020-10-15 00:10:15,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:10:15,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:15,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:10:15,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:10:15,076 INFO L87 Difference]: Start difference. First operand 1191 states and 1323 transitions. Second operand 31 states. [2020-10-15 00:10:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:17,519 INFO L93 Difference]: Finished difference Result 1335 states and 1492 transitions. [2020-10-15 00:10:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:10:17,520 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2020-10-15 00:10:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:17,533 INFO L225 Difference]: With dead ends: 1335 [2020-10-15 00:10:17,533 INFO L226 Difference]: Without dead ends: 1321 [2020-10-15 00:10:17,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:10:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-15 00:10:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1312. [2020-10-15 00:10:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-15 00:10:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1461 transitions. [2020-10-15 00:10:17,739 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1461 transitions. Word has length 59 [2020-10-15 00:10:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:17,739 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1461 transitions. [2020-10-15 00:10:17,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:10:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1461 transitions. [2020-10-15 00:10:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:10:17,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:17,748 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:17,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-10-15 00:10:17,749 INFO L427 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash -774460840, now seen corresponding path program 100 times [2020-10-15 00:10:17,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:17,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662935305] [2020-10-15 00:10:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:10:18,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-15 00:10:18,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:10:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:10:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:10:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:18,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:18,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:18,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:18,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:10:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:10:19,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662935305] [2020-10-15 00:10:19,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:19,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:10:19,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15929512] [2020-10-15 00:10:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:10:19,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:10:19,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:10:19,385 INFO L87 Difference]: Start difference. First operand 1312 states and 1461 transitions. Second operand 31 states. [2020-10-15 00:10:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:21,770 INFO L93 Difference]: Finished difference Result 1327 states and 1476 transitions. [2020-10-15 00:10:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:10:21,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2020-10-15 00:10:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:21,779 INFO L225 Difference]: With dead ends: 1327 [2020-10-15 00:10:21,779 INFO L226 Difference]: Without dead ends: 1315 [2020-10-15 00:10:21,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:10:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-15 00:10:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1313. [2020-10-15 00:10:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-10-15 00:10:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1456 transitions. [2020-10-15 00:10:21,989 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1456 transitions. Word has length 59 [2020-10-15 00:10:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:21,990 INFO L479 AbstractCegarLoop]: Abstraction has 1313 states and 1456 transitions. [2020-10-15 00:10:21,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:10:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1456 transitions. [2020-10-15 00:10:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:10:21,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:21,999 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:21,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-10-15 00:10:22,000 INFO L427 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:22,000 INFO L82 PathProgramCache]: Analyzing trace with hash -666334599, now seen corresponding path program 101 times [2020-10-15 00:10:22,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:22,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108130009] [2020-10-15 00:10:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:10:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:10:22,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:22,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:22,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:22,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:22,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:22,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:22,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:22,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 00:10:22,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:22,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:10:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-15 00:10:22,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108130009] [2020-10-15 00:10:22,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:22,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:10:22,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365741347] [2020-10-15 00:10:22,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:10:22,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:10:22,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:10:22,579 INFO L87 Difference]: Start difference. First operand 1313 states and 1456 transitions. Second operand 17 states. [2020-10-15 00:10:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:23,495 INFO L93 Difference]: Finished difference Result 1363 states and 1516 transitions. [2020-10-15 00:10:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:10:23,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-15 00:10:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:23,503 INFO L225 Difference]: With dead ends: 1363 [2020-10-15 00:10:23,503 INFO L226 Difference]: Without dead ends: 1318 [2020-10-15 00:10:23,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=696, Invalid=1284, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:10:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-15 00:10:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1306. [2020-10-15 00:10:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-10-15 00:10:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1443 transitions. [2020-10-15 00:10:23,710 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1443 transitions. Word has length 59 [2020-10-15 00:10:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:23,710 INFO L479 AbstractCegarLoop]: Abstraction has 1306 states and 1443 transitions. [2020-10-15 00:10:23,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:10:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1443 transitions. [2020-10-15 00:10:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:10:23,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:23,719 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:23,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-10-15 00:10:23,719 INFO L427 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:23,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1486551934, now seen corresponding path program 102 times [2020-10-15 00:10:23,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:23,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771368661] [2020-10-15 00:10:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:10:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:23,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:23,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:23,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:23,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:23,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:10:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:10:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 00:10:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-15 00:10:24,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771368661] [2020-10-15 00:10:24,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:24,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:10:24,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706847220] [2020-10-15 00:10:24,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:10:24,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:24,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:10:24,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:10:24,225 INFO L87 Difference]: Start difference. First operand 1306 states and 1443 transitions. Second operand 17 states. [2020-10-15 00:10:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:25,069 INFO L93 Difference]: Finished difference Result 1994 states and 2176 transitions. [2020-10-15 00:10:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:10:25,071 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-15 00:10:25,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:25,086 INFO L225 Difference]: With dead ends: 1994 [2020-10-15 00:10:25,086 INFO L226 Difference]: Without dead ends: 1319 [2020-10-15 00:10:25,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=696, Invalid=1284, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:10:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-15 00:10:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2020-10-15 00:10:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-15 00:10:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1456 transitions. [2020-10-15 00:10:25,374 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1456 transitions. Word has length 59 [2020-10-15 00:10:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:25,374 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1456 transitions. [2020-10-15 00:10:25,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:10:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1456 transitions. [2020-10-15 00:10:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:25,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:25,383 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:25,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-10-15 00:10:25,383 INFO L427 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:25,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1726245881, now seen corresponding path program 103 times [2020-10-15 00:10:25,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:25,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834251794] [2020-10-15 00:10:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:25,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:25,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-15 00:10:25,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:25,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-15 00:10:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:26,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:26,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:10:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:10:27,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834251794] [2020-10-15 00:10:27,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:27,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:10:27,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571539803] [2020-10-15 00:10:27,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:10:27,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:27,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:10:27,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:10:27,848 INFO L87 Difference]: Start difference. First operand 1319 states and 1456 transitions. Second operand 42 states. [2020-10-15 00:10:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:30,557 INFO L93 Difference]: Finished difference Result 1469 states and 1623 transitions. [2020-10-15 00:10:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 00:10:30,558 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 60 [2020-10-15 00:10:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:30,568 INFO L225 Difference]: With dead ends: 1469 [2020-10-15 00:10:30,568 INFO L226 Difference]: Without dead ends: 1463 [2020-10-15 00:10:30,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-15 00:10:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1335. [2020-10-15 00:10:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-15 00:10:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1475 transitions. [2020-10-15 00:10:30,784 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1475 transitions. Word has length 60 [2020-10-15 00:10:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:30,785 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1475 transitions. [2020-10-15 00:10:30,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:10:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1475 transitions. [2020-10-15 00:10:30,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:30,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:30,794 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 00:10:30,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-15 00:10:30,794 INFO L427 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:30,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1280100409, now seen corresponding path program 104 times [2020-10-15 00:10:30,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:30,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850691387] [2020-10-15 00:10:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:31,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-15 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-15 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:31,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:31,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:31,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:31,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:10:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:32,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:32,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:10:32,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:32,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:10:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:10:33,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850691387] [2020-10-15 00:10:33,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:33,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:10:33,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130981501] [2020-10-15 00:10:33,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:10:33,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:33,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:10:33,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:10:33,162 INFO L87 Difference]: Start difference. First operand 1335 states and 1475 transitions. Second operand 40 states. [2020-10-15 00:10:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:35,756 INFO L93 Difference]: Finished difference Result 1341 states and 1480 transitions. [2020-10-15 00:10:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:10:35,757 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 60 [2020-10-15 00:10:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:35,764 INFO L225 Difference]: With dead ends: 1341 [2020-10-15 00:10:35,764 INFO L226 Difference]: Without dead ends: 1319 [2020-10-15 00:10:35,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=129, Invalid=2523, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-15 00:10:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2020-10-15 00:10:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-15 00:10:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1457 transitions. [2020-10-15 00:10:35,976 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1457 transitions. Word has length 60 [2020-10-15 00:10:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:35,977 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1457 transitions. [2020-10-15 00:10:35,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:10:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1457 transitions. [2020-10-15 00:10:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:35,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:35,985 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:10:35,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-15 00:10:35,985 INFO L427 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash -245814279, now seen corresponding path program 105 times [2020-10-15 00:10:35,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:35,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547080106] [2020-10-15 00:10:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 00:10:36,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:36,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:10:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:36,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:36,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-15 00:10:36,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:36,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:10:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:37,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 00:10:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:37,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:10:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:10:38,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547080106] [2020-10-15 00:10:38,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:38,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:10:38,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390576492] [2020-10-15 00:10:38,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:10:38,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:38,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:10:38,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:10:38,224 INFO L87 Difference]: Start difference. First operand 1319 states and 1457 transitions. Second operand 38 states. [2020-10-15 00:10:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:40,554 INFO L93 Difference]: Finished difference Result 1325 states and 1462 transitions. [2020-10-15 00:10:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:10:40,555 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 60 [2020-10-15 00:10:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:40,563 INFO L225 Difference]: With dead ends: 1325 [2020-10-15 00:10:40,563 INFO L226 Difference]: Without dead ends: 1301 [2020-10-15 00:10:40,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=133, Invalid=2519, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-10-15 00:10:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2020-10-15 00:10:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-10-15 00:10:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1437 transitions. [2020-10-15 00:10:40,790 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1437 transitions. Word has length 60 [2020-10-15 00:10:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:40,790 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1437 transitions. [2020-10-15 00:10:40,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:10:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1437 transitions. [2020-10-15 00:10:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:40,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:40,798 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 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 00:10:40,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-15 00:10:40,799 INFO L427 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:40,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1570174919, now seen corresponding path program 106 times [2020-10-15 00:10:40,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:40,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160012512] [2020-10-15 00:10:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:10:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:41,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:41,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:41,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 00:10:41,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:41,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-15 00:10:42,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:42,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:10:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:10:42,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160012512] [2020-10-15 00:10:42,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:42,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:10:42,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680620383] [2020-10-15 00:10:42,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:10:42,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:42,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:10:42,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:10:42,966 INFO L87 Difference]: Start difference. First operand 1301 states and 1437 transitions. Second operand 36 states. [2020-10-15 00:10:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:45,152 INFO L93 Difference]: Finished difference Result 1307 states and 1442 transitions. [2020-10-15 00:10:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:10:45,153 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 60 [2020-10-15 00:10:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:45,158 INFO L225 Difference]: With dead ends: 1307 [2020-10-15 00:10:45,158 INFO L226 Difference]: Without dead ends: 1281 [2020-10-15 00:10:45,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=2515, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-10-15 00:10:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2020-10-15 00:10:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-10-15 00:10:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1415 transitions. [2020-10-15 00:10:45,365 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1415 transitions. Word has length 60 [2020-10-15 00:10:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:45,365 INFO L479 AbstractCegarLoop]: Abstraction has 1281 states and 1415 transitions. [2020-10-15 00:10:45,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:10:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1415 transitions. [2020-10-15 00:10:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:45,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:45,373 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 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 00:10:45,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-15 00:10:45,373 INFO L427 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:45,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:45,374 INFO L82 PathProgramCache]: Analyzing trace with hash 699132921, now seen corresponding path program 107 times [2020-10-15 00:10:45,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:45,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749980692] [2020-10-15 00:10:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:10:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:45,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:46,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 00:10:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:46,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:10:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:46,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:46,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:46,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 00:10:46,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:46,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 00:10:47,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749980692] [2020-10-15 00:10:47,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:47,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:10:47,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746149709] [2020-10-15 00:10:47,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:10:47,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:47,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:10:47,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:10:47,221 INFO L87 Difference]: Start difference. First operand 1281 states and 1415 transitions. Second operand 34 states. [2020-10-15 00:10:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:49,187 INFO L93 Difference]: Finished difference Result 1287 states and 1420 transitions. [2020-10-15 00:10:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:10:49,188 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 60 [2020-10-15 00:10:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:49,194 INFO L225 Difference]: With dead ends: 1287 [2020-10-15 00:10:49,194 INFO L226 Difference]: Without dead ends: 1259 [2020-10-15 00:10:49,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=141, Invalid=2511, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:49,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-10-15 00:10:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1259. [2020-10-15 00:10:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-10-15 00:10:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1391 transitions. [2020-10-15 00:10:49,455 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1391 transitions. Word has length 60 [2020-10-15 00:10:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:49,455 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1391 transitions. [2020-10-15 00:10:49,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:10:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1391 transitions. [2020-10-15 00:10:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:49,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:49,462 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 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 00:10:49,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-15 00:10:49,463 INFO L427 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:49,463 INFO L82 PathProgramCache]: Analyzing trace with hash 816269369, now seen corresponding path program 108 times [2020-10-15 00:10:49,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:49,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055800217] [2020-10-15 00:10:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:10:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:50,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 00:10:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:50,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:10:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:50,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:50,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:50,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 00:10:50,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:50,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:10:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 00:10:51,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055800217] [2020-10-15 00:10:51,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:51,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:10:51,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879016284] [2020-10-15 00:10:51,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:10:51,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:51,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:10:51,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:10:51,244 INFO L87 Difference]: Start difference. First operand 1259 states and 1391 transitions. Second operand 32 states. [2020-10-15 00:10:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:53,063 INFO L93 Difference]: Finished difference Result 1265 states and 1396 transitions. [2020-10-15 00:10:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:10:53,064 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 60 [2020-10-15 00:10:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:53,073 INFO L225 Difference]: With dead ends: 1265 [2020-10-15 00:10:53,073 INFO L226 Difference]: Without dead ends: 1235 [2020-10-15 00:10:53,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=145, Invalid=2507, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-10-15 00:10:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2020-10-15 00:10:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-10-15 00:10:53,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1365 transitions. [2020-10-15 00:10:53,269 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1365 transitions. Word has length 60 [2020-10-15 00:10:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:53,270 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1365 transitions. [2020-10-15 00:10:53,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:10:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1365 transitions. [2020-10-15 00:10:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:10:53,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:53,277 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:53,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-15 00:10:53,277 INFO L427 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:53,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1143165959, now seen corresponding path program 109 times [2020-10-15 00:10:53,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:53,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372731467] [2020-10-15 00:10:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:53,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:53,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-15 00:10:53,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:53,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:10:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:10:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:10:53,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:53,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-15 00:10:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:53,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:10:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:10:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:10:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:10:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-15 00:10:54,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372731467] [2020-10-15 00:10:54,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:54,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:10:54,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731129539] [2020-10-15 00:10:54,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:10:54,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:10:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:10:54,873 INFO L87 Difference]: Start difference. First operand 1235 states and 1365 transitions. Second operand 30 states. [2020-10-15 00:10:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:56,529 INFO L93 Difference]: Finished difference Result 1253 states and 1386 transitions. [2020-10-15 00:10:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:10:56,530 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 60 [2020-10-15 00:10:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:56,538 INFO L225 Difference]: With dead ends: 1253 [2020-10-15 00:10:56,538 INFO L226 Difference]: Without dead ends: 1247 [2020-10-15 00:10:56,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:10:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2020-10-15 00:10:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1245. [2020-10-15 00:10:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-10-15 00:10:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1378 transitions. [2020-10-15 00:10:56,737 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1378 transitions. Word has length 60 [2020-10-15 00:10:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:56,737 INFO L479 AbstractCegarLoop]: Abstraction has 1245 states and 1378 transitions. [2020-10-15 00:10:56,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:10:56,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1378 transitions. [2020-10-15 00:10:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:10:56,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:56,744 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:56,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-15 00:10:56,745 INFO L427 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:56,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:56,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1938742904, now seen corresponding path program 110 times [2020-10-15 00:10:56,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:56,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402612551] [2020-10-15 00:10:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:56,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:10:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-15 00:10:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:57,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:10:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:10:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:10:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:57,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:10:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:57,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:57,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:10:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:10:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:57,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:10:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:57,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:10:57,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 00:10:57,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:57,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:10:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:10:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 00:10:58,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402612551] [2020-10-15 00:10:58,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:58,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 00:10:58,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662879165] [2020-10-15 00:10:58,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 00:10:58,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 00:10:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:10:58,472 INFO L87 Difference]: Start difference. First operand 1245 states and 1378 transitions. Second operand 33 states.